Basically virtual lab for the two main types of circuit. The sum of the individual branch currents equals the total current in the circuit. In this experiment, the circuit characteristics of resistors in. Learn about electrical circuits with the phet circuit construction kit briefly play with the app, learning the draganddrop components follow the instructions. If r is constant, the same for all v, then the circuit element obeys ohms law. Build circuits with batteries, resistors, light bulbs, fuses, and switches. Simple series and parallel circuits the definitions of series and parallel circuits will be given in this lab.
The rules for series and parallel combinations of resistors and. The current flow is expected to be uniform throughout the series circuits, but will be stronger through the smaller resistor in the parallel circuits. Two components are in series if they share a common node and if the same. Components are in parallel when they are in alternate branches of a circuit. Assume the space between the parallel plates is a vacuum. May 01, 2017 evaluate simple series and parallel circuits to predict changes to voltage, current, or resistance when simple changes are made to a circuit. I want students to see that there are two different ways of approaching a problem such as this. Increase understanding of the relationship of voltage, current and.
To observe resistance, current, and voltage relationships in series and parallel combinations. Gain experience analyzing and verifying, by measurements, the characteristics of series parallel resistive circuits. View the circuit as a schematic diagram, or switch to a lifelike view. For equipment, each lab station should include a dual channel oscilloscope preferably digital, a function generator and a quality. Here is a lab for middle school on series and parallel circuits. Brian lavelle and winston tran abstract the purpose of this lab is to. Series and parallel ac circuits worksheet ac electric circuits. Circuits in the first category can be analyzed using the concept of. What do you notice about the relationship between the three voltage readings v 1, v 2, and v tot in parallel circuits. In the next picture, we again see three resistors and a battery. At other nodes specifically the threeway junction between r 2, r 3, and r 4 the main blue current splits into two different ones. Experiment 4b series parallel circuits lab report phys. Calculate i 1, i 2, i 3 and vo for the circuit shown in figure 1 for f 1khz and f 10khz. To investigate the current flow and voltages in series and parallel circuits, and also to use ohms law to calculate equivalent resistances of series and parallel circuits.
In part 1 of the lab you will be analyzing the very top circuit and then you will work your way down the board for the other parts of the lab. For one part of the lab we used two 100 ohm resistors in series and measured the following. In a series circuit, there is only one path for the current to flow therefore all parts of a series circuit have the same current. In circuit b we have resistors r 1 and r 2 combined to get. The objective of this lab is to study circuits with resistors connected in series, parallel, and combination. Seriesparallel circuits lab free class notes online. The purpose of this lab is to verify ohms law then to apply ohms law to seriesparallel circuits and verify the current and voltage rules. In series they were connected one after the other, but in parallel, as the name suggests, they are side by side in the circuit. This is needed in a circuit to start the electrons moving.
The reciprocal of the total resistance equals the sum of the reciprocals of the individual branch resistances. Use pspice to simulate and analyze a series parallel rlc circuit at discrete frequencies and over a wide range of frequencies. In more complicated circuits you will need to generalize the notions of series and parallel. In this lab, my objective was to understand the relationships between resistance, potential. The electricity moving through a wire or other conductor consists of its voltage v, current i and resistance r. Series and parallel resistors physics 212 lab the circuit board in front of you has three circuits on it. Draw a circuit with resistors in parallel and in series. This activity will allow you to explore a model circuit and decide whether these light circuits are connected in series or in parallel. Laboratory in wave motion, electricity, magnetism and optics phys 2240 uploaded by.
Ecet 231 circuit analysis i lab 6 series parallel dc circuits objective. Determine if everyday objects are conductors or insulators, and take measurements with an ammeter and voltmeter. Series and parallel circuits objectives to study current flow and voltages in series and parallel circuits. To analyze this type of circuit, it should first be simplified reduced to an equivalent resistor, req. Measurements on dc circuits 1 objectives the objective of this experiment is to analyze simple resistive circuits in dc. Explain why total resistance of a parallel circuit is less than the smallest resistance of. The lab use the ohms law iru to find the equivalent resistance. Use pspice to determine i 1, i 2, i 3, and vo in figure 1 at f 1khz and f 10khz. When resistors are in parallel, the current flowing from the battery will come to a junction where it has a choice as to which branch to take.
Circuits such as these fall into one of two categories. This is from a physics lab report on voltage and current for resistors in series and parallel. Technologyengineering progression grades 910 the use of electrical circuits and electricity is critical to most technological systems in society. With simple series circuits, all components are connected endtoend to form only one path for. Series circuits series and parallel circuits siyavula. In this experiment, we could learn the difference between resistors in series and parallel. Oct 31, 2014 part 2 determine the current and voltage through current dividers and voltage dividers. In a parallel circuit, each device has a connection to the power supply, independent of the other device. Computer series and parallel circuits components in an electrical circuit are in series when they are connected one after the other, so that the same current flows through both of them. Rc circuits and the oscilloscope mercer university. Resistors in series and parallel physics lumen learning. Theory in the previous experiment, you constructed 4 circuits, each circuit built with one resistive element.
Construct the circuit shown in figure 1 and measure i 1, i 2, i 3 and vo. Compare measured and calculated voltages and current for a series parallel rlc circuit at discrete frequencies. Physic lab 5 series and parallel circuits please help me to correct my lab report and write the conclusion abstract. Data section includes a diagram of the series and the parallel circuit.
A series circuit is one where all the components including the battery are connected in a single, continuous loop. Rc circuits and the oscilloscope physics lab x objective in this series of experiments, the time constant of an rc circuit will be measured experimentally and compared with the theoretical expression for it. One such advance was made by a german physicist named georg simon ohm. Feb 22, 2015 phys 102 formal simple dc circuits lab report 1. General physics iii lab page 1 of 6 pcccascade experiment. Note, currents are measured indirectly by measuring the voltage across an.
Figure 5a is an example of the first category and figure 5b is an example of the second. In this experiment, you will construct circuits using multiple resistors. We then use ohms law to find the resistance by dividing the measured voltage by the. Erin phlegar and stephen few physics 102l, section. May 14, 2014 in this lab, we will investigate kirchhoffs 1st and 2nd rules for series and parallel circuits. Fuses, resistors, and switches must be connected in series to the components they are. For questions 2 through 4, you may want to verify your answers by measuring the effect. You may want to do the calculations for each circuit before coming to lab.
Series and parallel ac circuits worksheet ac electric. University of north carolina at charlotte department of. The current divides, with some passing through each parallel branch. Series and parallel circuits components in an electrical circuit are in series. Series and parallel circuits adam capriola and ben york experiment performed. Physic lab 5 series and parallel circuits please h. Most practical circuits involve various combinations of series and parallel components. Notice that in some nodes like between r 1 and r 2 the current is the same going in as at is coming out. The resistance of a resistive circuit element changes with temperature.
Rlc series and parallel circuits lab free class notes. Look at the following circuits and decide which are in series and which are in parallel. To study the relationship between current and voltage in dc circuits. The rules for series and parallel combinations of resistors and capacitors will also be explored. Physics 215 experiment 11 series and parallel circuits. Part 2 determine the current and voltage through current dividers and voltage dividers. We have already seen examples of series circuits in the last chapter. Not required equipment list qty items part numbers 1 acdc electronics lab em8656 2 d cell 1. For example, in figure 2, the equivalent resistance of r 4 and r 5 in parallel, 1 r 4 1 r 5 1 r 4 r 5 r 4 r 5, is in series with r 3. If two resistors are in series, then same current i flow. Seriesparallel circuits seriesparallel circuits can be more complex as in this case. S eries p arallel c ircuits i ntroduction in this experiment, we reduce series parallel circuits to an equivalent resistance.
Lab 3 dc circuits and ohms law introduction during the nineteenth century so many advances were made in understanding the electrical nature of matter that it has been called the age of electricity. The voltage is the same across each branch of a parallel circuit. Parallel lab included, labeled and organized all parts of the lab report. 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. Phys 2240section 516 lab 4b report anagha krishnan l ab r eport 4b.
Lab 3 circuits lab report series and parallel circuits shafkat. In this experiment you will examine the difference between series and parallel circuits. Ecet 231 circuit analysis i lab 6 seriesparallel dc circuits objective. 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. Determine the total charge stored by a circuit with 2 identical parallelplate capacitors in parallel with area, and a distance of between the parallel plates. 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. Students successfully completing this lab will accomplish the following objectives. Lab report series and parallel circuits february 19, 2016 shafkat salam lab partners. Series and parallel circuits amber lu physics 2240. Resistors in series and parallel introduction direct current dc circuits are characterized by the quantities current, voltage and resistance. The components are arranged one after another in a single pathway. Seriesparallel dc circuits analysis power calculations in a seriesparallel circuit effects of a rheostat in a seriesparallel circuit knowledge check 1.
To use ohms law to calculate equivalent resistance of series and parallel circuits. Suppose you are doing a physics lab that asks you to put a resistor into a circuit, but all the. View lab report experiment 4b series parallel circuits lab report from phys 2240 at university of north texas. The most common place you will encounter electric circuits is across them. When we connect the components we say that they are connected in series. If the following resistors were replaced with the values indicated. Voltage is potential energy, current is the amount of electrons flowing through the wire, and resistance is the friction force on the electron flow. A series circuit is one in which there is only one pathway for the electric current to follow. 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. Where series components all have equal currents running through them, parallel components all have the same voltage drop across them series. With simple parallel circuits, all components are connected between the same two sets of.
Resistive elements are not connected in series or parallel. Series and parallel circuits lab report phys 2240 studocu. Thats the key difference between series and parallel series circuits defined. In this lab, we will investigate kirchhoffs 1st and 2nd rules for series and parallel circuits. Two resistors r 1 and r 2 are connected in series if all the current that passes through r 1 also passes through. Circuit construction kit series of three activitites inquiry based using phet in electricity unit. In order for charges to move in a conductor, there must be a potential difference across the conductor, and there must be a complete path leading away from and back to the source of emf in fig. As resistors are added in series to a circuit, the total resistance will. We then confirm that resistance experimentally by measuring the total current and the total voltage. The purpose of the lab is to find the equivalent resistance for components in an electrical circuit in series and parallel. Data section includes schematic diagrams of the two. Lab report on series and parallel circuit free essays. The series circuits will only offer one pathway, but the parallel circuits will have more than one pathway for the electrons to follow. Gain experience analyzing and verifying, by measurements, the characteristics of seriesparallel resistive circuits.
Dc circuits may be in series, parallel or a combination. Note that in these calculations, each intermediate answer is shown with an extra digit. Accurately answer questions in complete sentences, at a high school level. Include a statement that the work done in this lab and submitted in this report is yours and your partners. Also, measurements in very simple series and parallel circuits will be discussed. Bulbs in series circuits lab included, labeled and organized all parts of the lab report. Your answers to the questions below should show some thought. Two resistors in series a circuit having two resistors r1 and r2 in series is indicated below. Science 14 lab 3 dc circuits dartmouth college home. And we can see the relationship of the resistances, current and voltage in circuit which related to ohms law. Therefore, this lab displayed ohms law because as the resistors resistance. Notice the voltmeter has leads in the com and v ports and is connected from one side of the resistors to the other side. Components in an electrical circuit are in series when they are connected one after the other, so that the same current flows through both of them.
1464 1111 876 213 999 105 1586 1515 25 1235 300 468 1232 664 1340 1283 1129 890 199 44 661 287 966 72 1020 789 389 1565 895 866 1609 836 10 526 1052 1028 749 1100 1039 112 696 1065 196