A companion laboratory manual for ac electrical circuits is also available. The lab use the ohms law iru to find the equivalent resistance. If an object is still plugged in but off, power is still flowing. Resistors in series and parallel university physics volume 2. Series and parallel circuit experiment, series, parallel, series circuit, parallel circuit, circuit, electorinc circuit, circuit. In this lab, we will investigate kirchhoffs 1st and 2nd rules for series and parallel circuits. To analyze this type of circuit, it should first be simplified reduced to an equivalent resistor, req. The amount of current is the same through any component in a series circuit resistance. Complex is a catchall, used to describe circuits that are not series.
As resistors are added in series to a circuit, the total resistance will. Series and parallel circuits super teacher worksheets. If two resistors are in series, then same current i flow. Laboratory in wave motion, electricity, magnetism and optics phys 2240 uploaded by. Circuit activity 2 series and parallel circuits using only cck inquiry based description the students will use the simulation to learn the goals through an inquiry approach. Electrical circuitsinquiry lab kit for ap physics 1. Calculating equivalent resistances in parallel circuits experiment time part 1 experiment time part 2 rules of thumb for series and parallel resistors series and parallel capacitors experiment time part 3 experiment time part 3, continued. Even now, there are many sources to learning, reading a book nevertheless becomes the first substitute as a great way. Parallel circuits have multiple ways more than one path for current to travel. In circuit b we have resistors r 1 and r 2 combined to get. Series parallel dc circuits analysis power calculations in a series parallel circuit effects of a rheostat in a series parallel circuit knowledge check 1. Founded in 2002 by nobel laureate carl wieman, the phet interactive simulations project at the university of colorado boulder creates free interactive math and science simulations.
Where a set of electrical components are connected in branches. Circuit lab 3 series and parallel circuit experiment youtube. The answers on this lab are a product of my own work and effort. With these two derived resistor relationships, we can nd all the properties of any circuit containing resistors in series or parallel or any combination of the two. Series and parallel circuits both 4 basic parts energypower source ex. After completing this lab, you will be able to explain the difference between series and parallel circuits, and describe how the voltage and. For questions 2 through 4, you may want to verify your answers by measuring the effect. Circuit construction kit series of three activitites inquiry based using phet in electricity unit. This is from a physics lab report on voltage and current for resistors in series and parallel.
Converting the circuit from a series to a parallel circuit. Physic lab 5 series and parallel circuits please h. Note that in these calculations, each intermediate answer is shown with an extra digit. Resistors in series and parallel example no2 find the equivalent resistance, r eq for the following resistor combination circuit. You are going to take measurements of current and potential difference in series and parallel circuits. Data section includes a diagram of the series and the parallel circuit. Find the current that would pass through each resistor and the voltage across each if they are connected in a series b parallel. Electrical circuits have become commonplace in todays society. Referring to the example combining series and parallel circuits and figure 5, calculate i 3 in the following two different ways. Name date class series and parallel circuits lab 32. Series and parallel circuits by corienne garbison on prezi. Series and parallel ac circuits worksheet ac electric circuits. View the circuit as a schematic diagram, or switch to a lifelike view.
Series and parallel circuits purpose to build series and. Simple series and parallel circuits the definitions of series and parallel circuits will be given in this lab. For one part of the lab we used two 100 ohm resistors in series and measured the following. Circuit activity 2 series and parallel circuits using. This stops the circuit from draining the battery while you add jumpers. The aim of this activity is to use the electric circuits simulation above by phet to investigate the properties of circuits and to discover some circuit rules that are always true. While the bulbs are still lit, carefully disconnect one of the bulbs from the circuit.
In what way would your answer to question 4 above be important for an. Calculate and measure rt for the following circuits. Accurately answer questions in complete sentences, at a high school level. A circuit where the ammeter is connected in parallel.
Seriesparallel circuits lab free class notes online. Another purpose of this question is to instill in students minds the concept of components in a simple parallel circuit all sharing the same amount of voltage challenge your students to recognize any mathematical patterns in the. The purpose of this lab is to verify ohms law then to apply ohms law to series parallel circuits and verify the current and voltage rules. How does the motion of the electrons through the resistors compare to those from the battery. Draw what the screen looks like explain your answers to the following questions. If a battery is being used, remove two cells from the battery. For this experiment you will need an assortment of wires with alligator connectors and banana connectors. Series and parallel circuits, physics lab help studypool. Included in this zip file is a powerpoint for use with the students. You are going to build 2 series circuits, 2 parallel circuits and one combination circuit and measure the current through and voltage across each resistor. In this experiment, we could learn the difference between resistors in series and parallel. Resistors in series and parallel circuits using cck simulation venu kantamani period 1 learning goals. Recently, we did a lab where we constructed a circuit with two 1 k.
Series and parallel circuits basics 3 5 click the advanced tab and alter the resistivity of the wire. Provide reasoning to explain the measurements in circuits. If students have access to calculators that can do complexnumber arithmetic, the complex approach is actually simpler for seriesparallel combination circuits, and it yields richer more informative results. The supply voltage in a series circuit is equal to the sum of the individual voltage drops. Each of these circuits will use the same three resistors. Draw arrows to show the path of the electricity in this series circuit. Series and parallel improved answer there are four categories of circuit. The first principle to understand about parallel circuits is that the voltage is equal across all components in the circuit. Kirchhoffs voltage law kvl states, for a closed loop series path the algebraic sum of all the voltages around any closed loop in a circuit is equal to zero.
And we can see the relationship of the resistances, current and voltage in circuit which related to ohms law. Loose wires, worn out batteries, dead light bulbs and missw. Learn parallel circuits with free interactive flashcards. In this lab you will work with two circuits, one series and one in parallel. Circuit lab resistors in series and parallel circuits. In this series parallel circuit, resistors r1 and r2 are in series with each other, but resistor r3 is neither. The current flow is expected to be uniform throughout the series circuits, but will be stronger through the smaller resistor in the parallel circuits. The objective of this exercise is to examine kirchhoffs voltage and current laws. A 5011m resistor, a 10ohm resistor, and a 15 ohm resistor are connected in parallel with a battery the current through the 5ohm resistor is 2. Series and parallel circuits lab report phys 2240 studocu.
Suppose you are doing a physics lab that asks you to put a resistor into a circuit, but all. In this seriesparallel circuit, resistors r1 and r2 are in series with each other, but resistor r3 is neither in series nor in parallel with either r1 or r2. Again, at first glance this resistor ladder network may seem a complicated task, but as before it is just a combination of series and parallel resistors connected together. Where a set of electrical components are connected in two or more continuous loops. Explain why total resistance of a parallel circuit is less than the smallest resistance of.
May 14, 2017 circuit lab 3 series and parallel circuit experiment. Click the reset button to begin working on a parallel circuit. Simple series circuits series and parallel circuits. Build circuits with batteries, resistors, light bulbs, fuses, and switches. Parallel circuits have at least two or more devices connected in such a way that. This is needed in a circuit to start the electrons moving. Two resistors in series a circuit having two resistors r1 and r2 in series is indicated below.
Notice the voltmeter has leads in the com and v ports and is connected from one side of the resistors to the other side. Physic lab 5 series and parallel circuits please help me to correct my lab report and write the conclusion abstract. Circuit lab 3 series and parallel circuit experiment. Though i may have received some help in understanding the concepts andor requirements, i did the work myself. Fuses, resistors, and switches must be connected in series. Basically virtual lab for the two main types of circuit.
The electrician surveys the site and determines what kind of currents and voltages are required to satisfy the clients needs. Series and parallel circuits basics phet contribution. You will also need access to a power supply set at 6 volts, a multimeter, as well as 50, 100, and and 500 ohm resistors. From our measurementsdata, how do i know that our circuit gives the correct value of the resistance. Your answers to the questions below should show some thought. Also, measurements in very simple series and parallel circuits will be discussed. We recorded the current through, and voltage across, each resistor as well as the entire network. Determine if everyday objects are conductors or insulators, and take measurements with an ammeter and voltmeter.
You may want to do the calculations for each circuit before coming to lab. Students will work hard to memorize the rules without really comprehending why the rules are true, and therefore often fail to recall or apply the. The explanation is what will be graded, so be as complete as possible, using information from the previous circuits to support your answer. Electrons flow from the negative side of the battery around in a loop to the positive side. Series and parallel inductors resources and going further. Identify series and parallel resistors in a circuit setting if youre seeing this message, it means were having trouble loading external resources on our website. The purpose of the lab is to find the equivalent resistance for components in an electrical circuit in series and parallel. Calculate and measure the voltage, current and resistance characteristics of complex series parallel circuits. Series and parallel resistors practice khan academy. Answer key series and parallel circuits in a series circuit electricity has only one path to follow. Note that in these calculations, each intermediate answer is shown with an. Series parallel circuits series parallel circuits can be more complex as in this case. A series circuit is one where all the components including the battery are connected in a single, continuous loop. The current through a lightblllb connected across the terminals of a 123v outlet is 0 50 at what rate does the bulb convert electric energy to light.
Using the approach developed in class, solve each circuit below. Sep 02, 2011 what do you notice about the relationship between the three voltage readings v 1, v 2, and v tot in parallel circuits. In this advancedinquiry experiment, students use multimeters to determine the relationships between voltage, current and resistance for both series and parallel circuits. Students will be able to discuss basic electricity relationships in series and parallel circuits build circuits from schematic drawings use voltmeters and ammeters to take readings in circuits. Seriesparallel dc circuits analysis power calculations in a seriesparallel circuit effects of a rheostat in a seriesparallel circuit knowledge check 1. Not required equipment list qty items part numbers 1 acdc electronics lab em8656 2 d cell 1. In both parts explicitly show how you follow the steps in the problemsolving strategies for series and parallel resistors above. Circuits circuit analysis basc your answers to questions 31 through 33 on the information below. Equation 7 gives the e ective resistance for resistors in parallel. The total resistance of any series circuit is equal to the sum of the individual resistances voltage. Seriesparallel dc circuits analysis power calculations in a series parallel circuit effects of a rheostat in a seriesparallel circuit knowledge check 1. Draw a circuit with resistors in parallel and in series.
What series and parallel circuits are how many volts are in each bulb skills practiced. Series and parallel circuits the easy way, and bundled to boot. Series and parallel cir cuits purpose to build series and parallel circuits and study the differences between them backgr ound electricians are called upon whenever new buildings need electrical work. This is because there are only two sets of electrically common points in a parallel circuit, and voltage measured between sets of common points must always be the same at any given time. Observe what happens to the other bulb and the ammeter reading and record your observations. In a series circuit, certain general rules may be stated with regard to quantities of voltage, current, resistance, and power. Resistive elements are not connected in series or parallel. Parallel lab included, labeled and organized all parts of the lab report. Calculate and measure r t, v 1, v 2, v 3, i 1, i 2, i 3, i t, and i a for the circuit in figure 2. Parallel dc circuits practice worksheet with answers.
If the following resistors were replaced with the values indicated. Measure the voltage and resistance at each indicated spot and record in the chart above. Part 2 determine the current and voltage through current dividers and voltage dividers. Parallel circuits 6 parallel circuits provide more than one path for electrons to move.
Which is cheaper a series or a parallel circuit answers. Fuses, resistors, and switches must be connected in series to the components they are. Find req, the equivalent resistance in this circuit. May 25, 2009 series circuits only have one way one path for current to travel. In a parallel circuit, all of the resistor leads on one side of the resistors are. May 14, 2014 in this lab, we will investigate kirchhoffs 1st and 2nd rules for series and parallel circuits. Record the voltages and currents through each part.
Examine series and parallel circuits, conductors and insulators, and the effects of battery voltage. I want students to see that there are two different ways of approaching a problem such as this. Equivalent resistance, current, and power in a series circuit a battery with a. In parallel voltage always stays the same no matter where you measure at. It will lead to know more than the people staring at you. Defining key concepts ensure that you can accurately define main phrases, such as series and parallel circuits. Reading this series and parallel circuits answers will have the funds for you more than people admire. However, a trend i have noticed in many students is the habit of memorizing rather than understanding these rules. You will apply a dc voltage to the circuit and measure the current through and voltage across each resistor. Calculate the current through each resistor and the total current for the circuit in pie based on the nominal voltage and resistance. Resistors in series and parallel circuits using cck simulation erica chen learning goals. Insert the wires of these leads into the circuit board across the three resistors in series with the two multimeters set to voltage v and current a as shown in the figures 6 and 7.
If youre behind a web filter, please make sure that the domains. On this page, well outline the three principles you should understand regarding series circuits. From your observations of the currents in these series circuits, answer the. Remember to include your reasoning when you are solving. Thousands of different circuits can be built with this gizmo. Physics 215 experiment 11 series and parallel circuits. Create circuits using batteries, light bulbs, switches, fuses, and a variety of materials. In this portion of the lab, we will be studying circuits containing resistors in series and in parallel. An introduction on how to teach the basics of parallel and series circuits, including how to do a simple lab on the difference between parallel and series circuits for light bulbs. Rules of series and parallel circuits are very important for students to comprehend. Where series components all have equal currents running through them, parallel components all have the same voltage drop across them series.
In the next picture, we again see three resistors and a battery. Choose from 500 different sets of parallel circuits flashcards on quizlet. We want our students to build circuits to understand ohms law, potential difference, current, and resistance, but most of the lab time is spent fighting with the equipment. A complete loop in which electrons from a voltage or current source flow. In spite of this, both kirchhoffs current law and kirchhoffs voltage law must still be satisfied for the entire circuit, as well as any subcircuits or branches. Learn about electrical circuits with the phet circuit construction kit briefly play with the app, learning the draganddrop components follow the instructions. Phet sims are based on extensive education research and engage students through an intuitive, gamelike environment where students learn through exploration and discovery. Resistors in series and parallel resistor combinations. The answers to this question may seem paradoxical to students.
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