Calculating Voltage And Current In Series And Parallel Circuits Worksheet

• Describe a voltage divider and solve problems involving one. Overview: Series v Parallel Circuits Series Parallel Pathways for electrons and current Only 1 path. The method of calculating the circuits equivalent resistance is the same as that for any individual series or parallel circuit. What is the unit of Capacitance? 2. Power Calculations in a Series/Parallel Circuit - Wisc-Online OER This website uses cookies to ensure you get the best experience on our website. (Note: components in parallel. (a) This circuit contains both series and parallel connections of capacitors. If the voltage is raised to 10 times its original value by the transformer, the current in the secondary coil will be reduced to one-tenth the value of the current in the primary coil. Introduction: Ohm’s Law for electrical resistance, V = IR, states the relationship between current, voltage, and electrical resistance. The following calculator will determine the unknown series resistor value in ohms for the LED circuit shown We've detected that you're using adblocking software or services. In this article, we will be discussing the series and parallel combination of resistors. Write the formula for calculating total resistance in a parallel circuit. Moreover, complicated combinations of capacitors often occur in practical circuits. (Round to 3 decimals!) (0. Set of wires. These circuits will usually consist of a power source and one or more resistors arranged in parallel or in series. Explain why total resistance of a parallel circuit is less than the smallest resistance of any of the resistors in that. Where I is the current through the circuit and R is the total resistance of the circuit. Use the tips given in Circuits & Resistors Module 4. As you can see there is a drastic difference in the voltage and current needed to operate each of these circuits. What is the voltage across the open switch Figure 1? 2. As current flows along a series circuit, each resistor uses up some energy. You carry your potential to a serial component, and voltage divides. Next, parallel in which there are different “parallel” paths which currents can take, shown in Figure 2. The current strength in a series circuit is the same throughout the entire circuit. It is connected in series. Some of the worksheets displayed are Series and parallel circuits, Circuits work r, Circuits work, Circuit a circuit b, Series and parallel circuit work, Series and parallel circuits, Section 6 current voltage and resistance in parallel and, 9 14 work. Generally speaking, most LED lighting uses a series-parallel combination. Contrast the way total resistance is calculated for resistors in series and in parallel. the current in the branches of the circuit (is the same, adds up). You just switch the methods from the series circuits =) To calculate resistances in parallel you use the same method used to calculate capacitors in series. Series & Parallel Circuits As the resistance of a resistor in series increases, the measured voltage. Solving Series and Parallel Circuits Worksheet Use the examples in your notes to help you solve the unknown values in the following circuits. What is the resistance in a circuit if a potential difference of 110 V causes a current of 10 A? 9. How to calculate the equivalent resistance value for resistors in series? In many electrical circuits resistors are connected in series or parallel. PHYSICS 111 LABORATORY Experiment #3 Current, Voltage and Resistance in Series and Parallel Circuits This experiment is designed to investigate the relationship between current and potential in simple series and parallel resistor circuits using ideas of conservation of energy and conservation of charge. To calculate the total overall resistance of a number of resistors connected in this way you add up the individual resistances. Don't forget to include units with your answers. R eq = _____ R eq = _____ R eq = _____ 2. Both voltage and current divide in these circuits Electric circuits often consist of several elements, some combined in series and others in parallel. (1) is an. C EQ = C 1 + C 2 + C 3. o Series-parallel circuits are also called combination circuits. 1/R total = 1/R 1 + 1/R 2. Confirm your calculations with voltage measurements using the voltmeter. This formula can be fairly easily derived if you don't mind dealing with fractions. Most SAT II Physics questions on circuits will show you a circuit diagram and ask you questions about the current, resistance, or voltage at different points in the circuit. components in series have the same current and their voltages add together). Ohm's Law in Series-Parallel Circuits - Voltage The voltage drop across a series-parallel circuits also occur the same way as in series and parallel circuits. The voltage across each resistor in parallel is the same. The circuit depicted at the right is an example of the use of both series and parallel connections within the same circuit. Current in parallel circuits. Those fifty 15 ohm, series connected Christmas tree lights, calculate the total current in the circuit if they are connected to a 115 V source. The total resistance R of two or more resistors. 1 Analysis of Circuits (2017-10110) Capacitors and Inductors: 9 – 2 / 12. DC Parallel and Series/Parallel Circuits Calculate the total resistance, the total current, the current through each resistor, and the voltage drop across each resistor in the parallel circuit shown. Series and Parallel Resistive Circuits The configuration of circuit elements clearly affects the behaviour of a circuit. Resistance tells us how difficult it is for the current to flow. Unlike in series circuits, a charge in a parallel circuit encounters a single voltage drop during its path through the external circuit. Series and parallel capacitors formula is a good way to find a capacitance value for. Series And Parallel Circuits Worksheet ~ wiring diagram components Best Images Of. The parallel RC circuit is generally of less interest than the series circuit. Parallel Circuits. This Current Divider Calculator can calculate the current going through any branch in a parallel circuit, using the formula shown above. Preferred resistor values are also calculated, use the radio buttons on each calculator to select the preferred value series to use. " Ïn a series circuit, current is equal through all components. To learn more about how you can help Engineers Edge remain a free resource and not see advertising or this message, please visit Membership. Parallel circuits. To solve this problem and to optimize the energy efficiency of the entire system, it is advisable to connect two panels in series (resulting in a doubling of voltage) and then connected in parallel to the three pairs previously connected in series (so as to have doubled and tripled voltage current). (c) Sean switches the electronic game to "standby mode". The same current flows through each part of a series circuit. This set of Basic Electrical Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Series Circuits and Parallel Networks”. Find the equivalent capacitance for capacitors in series. Complete the table by calculating the total resistance of the following parallel circuit. State the three mathematical equations for. • Describe the sum of the p. separate voltage drop. This calculator allows up to 10 different resistor values. parallel 17. About This Quiz & Worksheet. If the voltage is raised to 10 times its original value by the transformer, the current in the secondary coil will be reduced to one-tenth the value of the current in the primary coil. The number of amps of current flowing through the circuit may change if the current crosses a resistor, which impedes current flow. In this V, R, and I in parallel circuits worksheet, students calculate the total current, total voltage, and total resistance. CircuitLab has no problem simulating big circuits of resistors, voltage sources, and current sources. Ohm: Using Kirchhoff's Law for Complex Circuits. Capacitors in Series. Q3 The two batteries are identical. To learn more about how you can help Engineers Edge remain a free resource and not see advertising or this message, please visit Membership. Notice that at , the voltage across the capacitor is zero while the current in the circuit is at a maximum. Complex impedances. Analyzing series parallel circuits requires an understanding of the rules governing the separate series and parallel circuits. Find the potential difference across the 125-( lamp. Series or parallel circuit. Increasing the number of cells connected in parallel with each other has no effect on the current strength and the potential difference of the circuit. We hope to provide you with the best online voltage drop calculator, as well as all relevant information regarding voltage drop formulas, equations, and calculations, and more!. SERIES/PARALLEL CIRCUITS - Work Sheet Two Resolve the following problems and draw the schematic diagram for each problem. This Current Divider Calculator can calculate the current going through any branch in a parallel circuit, using the formula shown above. RLC Parallel circuit is the circuit in which all the components are connected in parallel across the alternating current source. Of course, you can use the 'product-over-sum' rule to find the parallel resistance of R1 and R2, then use it again to find the parallel resistance of that with R3, etc. In a Parallel circuit the same voltage is applied across all the resistors. In a series circuit, the components are arranged one after the other. Place your answers in the tables provided. Equivalent Resistance Worksheet 1 1. As an example, if three resistors having values of 1 kohm, 2 kohm and 3 kohm are placed in series then the total resistance is 1 + 2 + 3 kohm = 6 kohm. The question then really boils down to what the current vs. V 1 = V 2 = V 3 = V. The equivalent resistance of a parallel circuit is less than that of a series circuit. just equal to the total rms current owing in the circuit, however for a parallel RLC circuit this will not be the same. Not so with a parallel circuit. The last part asks student to find the ideal power factor between the parallel and series circuits. Parallel circuits. Before going to series and parallel capacitor circuits, first look at the difference between coulomb and farad because many people get confused in identifying the difference between Coulomb and Farad. If all were operated at the same time, what total current would they draw? 21A 2. Covers the main ideas of current and voltage in series and parallel circuits. Voltage Divider and Current Divider are the most common rules applied in practical electronics. Most SAT II Physics questions on circuits will show you a circuit diagram and ask you questions about the current, resistance, or voltage at different points in the circuit. In a parallel circuit, the resistors are placed in such a way that they are all receiving the same amount of current. We'll see how we can measure them and we'll also look at some simple calculations of voltage and current. Calculate the voltage drop across R1/R2. Some of the worksheets displayed are Series and parallel circuits, Circuits work r, Circuits work, Circuit a circuit b, Series and parallel circuit work, Series and parallel circuits, Section 6 current voltage and resistance in parallel and, 9 14 work. A parallel circuit provides more than one pathway for the electrons to move through the circuit. Analog electronic circuits are those in which current or voltage may vary continuously with time to correspond to the information being represented. Do you think holiday lights are an example of parallel or series bulbs in a circuit? Explain why: 2. If the circuit is broken at any point there won’t be any current that will flow. Series & Parallel Circuits As the resistance of a resistor in series increases, the measured voltage. It is valid for many circuits and allows us to calculate one quantity if we know the value of the other two. The current is the same through each resistor. Determine the equivalent (total) resistance for each of the following circuits below. State that the combined resistance of two resistors in parallel is less than that of either resistor by itself. Solving Circuits Worksheets Teachers Notes The following series of worksheets will help the students work through the solutions of solving electric circuits. This article on basic calculations for AC series and parallel circuits is a prime example. to calculate total resistance , (add, use reciprocals). The current flowing through the resistor, I R, the current flowing through the inductor, I L and the current through the capacitor, I C. Can recognize KVL and KCL for applying a series-parallel circuit. Absolute Voltage - Electric circuits and the voltage at any point; Series Circuits - Voltage and current in series circuits. 2 ohm lamps are connected in series and. Ohm discovered that the ratio of voltage to current in a metallic resistor is constant as long as the temperature is held constant. " "In a parallel circuit, resistance. The equation for solving this circuit is to first find the values of your parallel circuit. How do you calculate the total resistance of a series circuit? The Effective Resistance of Resistors Connected in Series There are three important characteristics in a series circuit: (a) The current passing through each resistor is the same. series circuits. Resistors in parallel. What current flows in a circuit with a potential difference of 12. This is a pretty easy circuit question, just asking fundamentals. Apparatus 1. For the circuit shown, use superposition to find the power being dissipated in R 3. 3 Circuit reduction. You must be able to apply specific calculations and understand. The circuit depicted at the right is an example of the use of both series and parallel connections within the same circuit. About This Quiz & Worksheet. Introduction to Electric Circuits Electric Circuit Schematics. In a parallel circuit the current through the branches must be the same, so they burn equally bright. What is the current through, voltage across and power dissipated by the 300 Ω. Battery, electromotive force, voltage. This current varying in parallel circuits brought about Kirchoff’s next big law in basic electrical engineering, Kirchoff’s Current Law (KCL). However, the resistance of a. In series-parallel circuits, the circuit can be treated as both a series and a parallel circuit. In each case a battery maintains a 60-V potential difference across a group of three resistors. Note 1: Total resistance is equal to the sum of all the resistors Note 2: Current in the circuit remains the same through all the resistors Note 3: Voltage source is equal to the sum of voltage drops of all resistors Note 4: Power of the circuit is equal to the. Simple to use Ohm's Law Calculator. How to Solve a Parallel Circuit (Easy) PhysicsHands. Parallel circuits are arranged such that current can travel through different branches simultaneously. From there, we can calculate the voltage drop and current for each resistor in the circuit. · A series circuit is a Voltage Divider. Internal resistance of battery 2. What is the total resistance of the circuit? b. Resistors can be combined in series orResistors. Where I is the current through the circuit and R is the total resistance of the circuit. and finally, 4) Using Voltage division principle, you can calculate the voltage drops across different resistors. To improve this 'Impedance of R and C in parallel Calculator', please fill in. Complete the table by calculating the total resistance of the following parallel circuit. State two rules for the voltage and current in a series circuit. Find the voltage drop for any resistors in series. In the circuit above if C1 = 20µF and C2 = 30µF, calculate the combined capacitance. Calculate the current. Kirchoff's voltage law: In a series circuit, the signed sum of the voltage drops around the circuit add up to zero. Capacitive or inductive reactance calculator is an online tool for electrical and electronic circuits to measure the electrical resistance of the Capacitor and Inductor. Calculate the voltage drops. Voltage in series and parallel circuits by lrcathcart Teaching from series and parallel circuits worksheet answer key , source:tes. Determine the total voltage (electric potential) for each of the following circuits below. Series and Parallel Circuits Working Together. (c) Sean switches the electronic game to "standby mode". Most electronic circuits fall into this category. For example, the total value capacitance of the combination is:-CT = C1 + C2 + C3. CT = 1µF + 2µF + 1µF = 4µF. Sometimes to remember these rules we say, "In parallel, voltage stays the same but current divides. Light bulbs in parallel will remain on when one bulb is removed. Basic DC Theory BASIC DC CIRCUIT CALCULATIONS Figure 19 Voltage Drops in a Series Circuit Ohm’s law may now be applied to the entire series circuit or to individual component parts of the circuit. Tagged as: Students will identify series and parallel circuits for this worksheet. Series resistors (9. In a combination of series and parallel circuits, first solve for the total resistance of parallel components, and redraw the circuit as a series circuit, with each parallel section replaced by one resistor equal to the resistance of the parallel component. When you are first faced with a series/ parallel combination circuit they seem almost down right impossible to solve to begin with. In a parallel circuit, though, if you add more branches with bulbs in them, they will all still be bright. In this lesson we'll try and get a handle on what voltage and current mean. Those fifty 15 ohm parallel connected Christmas tree lights. When resistors are used in electronic circuits they can be used in different configurations. Calculate the amount of current "drawn" by each resistor, as well as the amount of power dissipated by each resistor: Learning to mathematically analyze circuits requires much study and practice. Treat R 1 as wire. From there, we can calculate the voltage drop and current for each resistor in the circuit. Current is the rate of flow of charge. • So in an RC circuit if we have more than one capacitor, however, we can combine the capacitors (series and/or parallel combination) and represent them with one equivalent capacitor, we still have a first-order circuit. We received some confusing circuits about the topic and they ask if the batteries connections are in series, parallel or series-parallel and which one they go for?. Part II Parallel circuits 1. RLC Parallel circuit is the circuit in which all the components are connected in parallel across the alternating current source. The low resistance bulb, because it draws more current. This series resistor calculator calculates the total series resistance of a circuit. Applying the voltage division rule can also solve simple circuits thoroughly. R eq = _____ R eq = _____ R eq = _____ 2. In contrast to the RLC series circuit, the voltage drop across each component is common and that's why it is treated as a reference for phasor diagrams. Series-Parallel Circuits If we combined a series circuit with a parallel circuit we produce a Series-Parallel circuit. All right, let me pick a new color. Calculate Series And Parallel Circuits. Sometimes, a series-parallel circuit can be broken into series parts and parallel parts. Not so with a parallel circuit. 2uF respectively when connected to a 12V a. This increasing behavior of the current with time in the LR circuit should be contrasted with the decreasing current in the RC circuit with time. calculators, engineering calculators Enter any two of the following values and press calculate button. Don't forget to include units with your answers. Total Energy of Series vs. In this article, we will be discussing the series and parallel combination of resistors. As an example, if three resistors having values of 1 kohm, 2 kohm and 3 kohm are placed in series then the total resistance is 1 + 2 + 3 kohm = 6 kohm. Electrical devices can be connected in two different ways in a circuit. Once you know the initial and final values for some quantity X in an RC circuit (X can be a voltage, current, charge, whatever), then you can apply the exponential relaxation: X(t) = Xi + (Xf-Xi) exp(-t/τ). Resistors are in series if the same current must pass sequentially through them. The difference with using the software is the student get feedback immediately if they didn’t get it right. The easiest way to calculate the actual capacitive reactance in a series circuit is using the Ohm’s law method where the circuit voltage is divided by the circuit current. To calculate the voltage the resistance across every resistor. Series/Parallel Capacitors in RC DC Circuits Lab Sheet 2 4. For example V2 = I R2. The voltage across each resistor in parallel is. Voltage attempts to make a current flow, and current will flow if the circuit is complete. Refer to the above figure, from Objective 5, for this Objective and if your circuit is not wired accordingly, do so now. The Series Circuit A SERIES CIRCUIT or ‘‘series-connected circuit’’ is a circuit having JUST ONE CURRENT PATH. Reff,series = R1 + R2 + R3 + R4. Graphing 23. In other words, the current depends on the frequency of the AC supply. Complete the table by calculating the total resistance of the following series circuit. Traditionally, the direction of current is taken as the flow of positive charges. A typical pure parallel circuit is shown below. 8 Kirchhof's Voltage Law and Kirchhof's Current Law 20 9 Divider rules for voltage (VDR) and current (CDR). Determine the value of the capacitor and the inductance and resistance of the coil?. In a parallel circuit, the voltage across each of the components is the same, and the total current is the sum of the currents flowing through each component. Every circuit MUST have the following parts: 1. Determine the equivalent (total) resistance for each of the following circuits below. • understand that resistance makes it hard for the current to flow • apply their understanding of circuits to understand how a series and parallel circuit are. ” “In a parallel circuit, power. Each of the following waveform plots can be clicked on to open up the full size graph in a separate window. For the circuit of Figure 1, Voltage Division formulas are: S V R R R V 1 2 1 1 + = (1) S 2 R R V R V 1 2 2 + = (2. Recall that energy in a single capacitor is proportional to the square of the voltage. Magnetic Circuits in Series and in Parallel. All parts are connected one after another. Electrical devices can be connected in two different ways in a circuit. At times it may not be obvious, however we will go through a few simple circuits and look at the. Voltage in series and parallel circuits by lrcathcart Teaching from series and parallel circuits worksheet answer key , source:tes. This is a very common circuit configuration. In a parallel circuit the current through the branches must be the same, so they burn equally bright. Multiple Pathways for current Current (I) Always the same throughout Different at each branch - MUST CALCULATE Voltage (V) VOLTAGE DROP after every resistor/bulb: MUST CALCULATE each separately Each Branch starts with same voltage (Voltage. Kirchhoff's Current Law Conservation of Charge. Series Circuit Parallel Circuit # of Pathways Effect of removing a load Voltage drop Current Resistance Connecting cells to Grade 9 Science Unit 3: Electricity. Notice that at , the voltage across the capacitor is zero while the current in the circuit is at a maximum. " "In a parallel circuit, resistance. Resistors in Series When connected in series, the total resistance, R T, is equal to R T R 1 R 2 R 3. Calculate the equivalent resistor for a number of parallel resistors This calculator calculates the equivalent resistor (Rsum) of two parallel resistors or three parallel resistors. Some circuits contain series and parallel components. Write down the formula for the total capacitance of the capacitors in the circuit above. RI is 240 Q andR3 120 Q. The total resistance R of two or more resistors. A Current Source in Parallel with a Voltage Source To simplify circuits with 3 or more elements in series: Application of Circuit Reduction Techniques. There are two types of electrical circuit - series and parallel. Formula How to find it Current Resistance Voltage. Take a look at the circuit with three series inductors shown in the top diagram. For a series connection of capacitors, apply Kirchhoff's voltage law (KVL) around a loop in the bottom diagram of sample circuit. 1 Simple Circuits 532 Series and Parallel Circuits FIGURE 23-1No matter what path the water of a river takes down a mountain, the amount of water and the drop in. Find the total resistance of the circuit. Instructions: Given a circuit diagram with sufficient data to complete all current, voltage, and resistance values, the student will perform all calculations for all unknown values. In this circuits worksheet, students learn how to determine total voltage, total resistance, and total current. When used on individual component parts, the voltage across that part is equal to the current times the resistance of that part. To measure the current in a circuit, the ammeter is connected in series as shown in the figure. Calculate the total resistance for a 650 ohm, a 350 ohm, and a 1000 ohm resistor connected in series. The output voltage of the cell is the rated voltage minus the drop across the internal resistance. Current divider calculator is a useful tool to calculate the current divided across two resistors. The difference is that current is the same in all parts of a series circuit, whereas voltage is the same across all branches of a parallel circuit. In the diagrams/text above, we had either series OR parallel circuits. State and apply KCL in the analysis of simple parallel circuits d. Code to add this calci to your website Just copy and paste the below code to your webpage where you want to display this calculator. Parallel circuits. Last video, we saw what happens when we have resistors in series. The following calculator will determine the unknown series resistor value in ohms for the LED circuit shown We've detected that you're using adblocking software or services. Lab Voltage and Current Measurement 01 and Ohm's Law in Series-Parallel dc Circuits BTE2122 "Electrical Fundamentals and Circuit Analysis I" Laboratory Lab Objectives By the end of this lab, students should be able to: 1. Since it's open circuit and there is no current going through R 1. Based on your knowledge of series circuits, what will be the voltage measured in the voltage meter in the picture below? Based on your. It just can’t be done through these series and parallel rules alone. Other uses of the parallel resistor calculator. " For each of these rules, explain why it is true. In circuits 11a and 11b, you have a series and a parallel circuit made with identical parts. About This Quiz & Worksheet. Equations * Series Resistance = R1 + R2 * Parallel Resistance = (R1 * R2) / (R1 + R2) * Ohms Law: V = I. 531-550) and/or from notes in class. Bolton - 2012) Physics 155. Students match the correct term with the correct definition. Source transformations are discussed in Section 5. Where series components all have equal currents running through them, parallel components all have the same voltage drop across them -- series:current::parallel:voltage. Contains circuit diagrams. In the diagrams/text above, we had either series OR parallel circuits. It is, therefore, useful to have a set of rules for finding the equivalent capacitance of some general arrangement of capacitors. Can recognize which parts are in series or parallel for a series-parallel circuit. Circuits require a voltage source to operate. As an example, if three resistors having values of 1 kohm, 2 kohm and 3 kohm are placed in series then the total resistance is 1 + 2 + 3 kohm = 6 kohm. Don't forget to include units with your answers. In a parallel circuit the current through the branches must be the same, so they burn equally bright. Elements in a series circuit share equal currents and the sum of their voltage drops equals the supply voltage. Last video, we saw what happens when we have resistors in series. The voltage in a series circuit is always going to equal the voltage of the circuit's battery. " For each of these rules, explain why it is true. In a parallel combination of resistors the voltage (or potential difference) across each resistor is the same and is equal to the applied voltage i. The current depends on the applied voltage and the number of and nature of other components in the circuit. In the above circuit,. 4 Series and Parallel Circuits When multiple resistors are used in a circuit, the total resistance in the circuit must be found before finding the current. Draw the two circuits above (series and parallel circuits), but in a simplified fashion, showing all 3 resistors simplified as one equivalent resistor. Series and Parallel Circuits (R. 0 A and a resistance of 11. There's my ideal conducting wire. For a series circuit the total current is equal to the current in each of the resistors. A combination of worksheets for students to complete in class using electricity kits to test the effect of using series and parallel circuits on both current and voltage. Calculate the voltage across the electronic game. Let current I (quantified as Ampere) flow through the series circuit. Is the equivalent resistance, R eq, of a series circuit greater than or less than any individual resistor?. The total resistance R of two or more resistors. The students will also build circuits and verify the voltages, currents, and resistances using a multimeter. There are two or more paths for the current to flow in a parallel circuit. Instructions: Given a circuit diagram with sufficient data to complete all current, voltage, and resistance values, the student will perform all calculations for all unknown values. Kirchhoff law example. Then calculate total circuit current and the voltage drops and currents for each of the resistors. Ohm: Using Kirchhoff's Law for Complex Circuits. State the three mathematical equations for. Solving Circuits Worksheets Teachers Notes The following series of worksheets will help the students work through the solutions of solving electric circuits. Series Circuits. Instructions: Given a circuit diagram with sufficient data to complete all current, voltage, and resistance values, the student will perform all calculations for all unknown values. Both voltage and current divide in these circuits Electric circuits often consist of several elements, some combined in series and others in parallel. Voltage is the Cause, Current is the Effect. Sometimes, a series-parallel circuit can be broken into series parts and parallel parts. They’re also useful when you have many devices connected in parallel or in series, devices that form loops, or a number of devices connected to a particular node. Series-Parallel Circuits If we combined a series circuit with a parallel circuit we produce a Series-Parallel circuit. The Current Probe is used to measure the total current in the circuit. file i01150 Question 11 Use Kirchhoff's Current Law to calculate the magnitude and direction of the current. They calculate electrical energy consumption at home. " For each of these rules, explain why it is true. Capacitors in Series. The following three appliances are connected in series to a 120 V house circuit: a toaster, 1200 W; a coffee pot, 750 W; and a microwave, 6. 5 volt alkaline battery has a resistance of 0. Need to know how to calculate series resistance, parallel resistance, and a combined series and parallel network? If you don't want to fry your circuit board, you do! This article will show you how in just a few easy steps. What IS the magnitude of the circuit current? 16. The current strength in a series circuit is the same throughout the entire circuit. (Note: components in parallel. voltage source.