To calculate the voltages and currents in simple circuits involving only resistors using the rules for adding series and parallel resistors. Consider finding the equivalent resistance of the network shown below. Jan 17, 2020 when resistors are connected such that they branch out from a single point and join up again in the circuit. The object of this lab is to study resistances in series and parallel and to observe and quantify the effect of an ammeter. In addition, measurements will be made to check the validity of the assumptions used to derive the theoretical expression for the total resistance of a series combination. The simplest combinations of resistors are series and parallel connections figure \\pageindex1\. The simplest combinations of resistors are series and parallel connections figure. The physics last week you examined how the current and voltage of a resistor are related. V3 0 r1 req parallel r2 figure 4 parallel resistors lets say that you took the leads from a voltmeter and placed them in the upper two corners of the circuit in figure 3a. Resistors in series and parallel connections fau studocu. A resistor is an electrical componentdevice that has electrical resistance. In addition, units and numerical results must be reasonable. Use a voltmeter, an ameter to measure the voltage across parts of the series and parallel circuits and an ameter to measure the current through the circuits. Erin phlegar and stephen few physics 102l, section.
Three resistors with different resistances ranging from. 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. Series and parallel a circuit is created using a battery and 3 identical resistors, as shown in the figure. Oct 15, 2016 parallel resistances experiment 4 oman billingual syllabus for grade 12 prepared by g. Open the dc power supply set up file provided with the lab instructions. To check the results of connecting series and parallel resistors kcl its a fundamental law that manifestation of the conservation of matter charges, and it says that the sum of currents. And we can see the relationship of the resistances, current and voltage in circuit which related to ohms law. The object of this lab is to study resistances in series and parallel and to observe and quantify the effect of an ammeter on a circuit. In the previous lab you made a circuit that contained one resistive element i. In this experiment, we could learn the difference between resistors in series and parallel.
Connect the two resistors on the circuit board that are marked 150 ohms and 700 ohms as shown in figure 6a. Capacitor and resistors capacitors resistors rcl circuits resistance lab. Suppose you are doing a physics lab that asks you to put a resistor into a. Print this page to start your lab report 1 copy print 2 copies of this file data page.
Series and parallel connections the objectives of this lab are. Lab 4 resistors in series and parallel introduction\abstract in this. Ohms law iiiresistors in series and parallel however, all wires that make connections and the connections themselves qualify as series resistance. We will use a multimeter to measure the voltage v, resistance r, and current i of said series circuit and use the collected data to determine how a series circuit functions. Physic lab 5 series and parallel circuits please h. Resistors in series and parallel physics lab report series and parallel resistors lab physics capacitor and resistors programming massively parallel processors.
They are said to be in parallel since the voltage across each resistor equals the voltage of the power supply and the resistors provide parallel paths for the current flow. Lab 4 series and parallel resistors physics 212 lab what you need to know. You will charge both a series arrangement and a parallel arrangement of capacitors and in each case use the stored energy to light up a small led bulb. Physic lab 5 series and parallel circuits please help me to correct my lab report and write the conclusion abstract. Not required equipment list qty items part numbers 1 acdc electronics lab em8656 2 d cell 1. You will be able to measure voltage, current, and resistance for different components in your circuits. P222 resistor lab california state university, bakersfield. A handson approach applications of gpu computing series axelson j. The objective of this experiment is to verify ohms law applied to a. This experiment demonstrates how current is distributed in resistors connected in series or parallel, and thus describes how to calculate the total effective resistance. If two resistors r 1 and r 2 are connected in series, the currents passing through the two resistors are equal, and the total voltage is equal to the sum of the individual voltages across the. Notice the voltmeter has leads in the com and v ports and is connected from one side of the resistors to the other side. Resistors in series and parallel physics lab report.
Nov, 2011 these simple circuits look boring on the surface try changing some values like a voltage at 120 or 277 then resistances of 240 ohms and then add wire resistance. In series they were connected one after the other, but in parallel, as the name suggests, they are side by side in the circuit. In a parallel circuit, the voltage drop across each resistor is the same, but the current through each one may vary. This week you are going to examine how the current and voltage of different combinations of resistors are related. A particular circuit will first be analyzed theoretically and then those predictions will be checked experi mentally.
An electrical circuit is a network that has a closed loop, giving a return path for the current. The three resistors in the figure given below shows that the path for current to flow through the circuit can be in three different routes. For one part of the lab we used two 100 ohm resistors in series and measured the following. Total resistance in a series circuit is equal to the sum of the individual resistances. R1 r2 a there are two ways in which resistors can be hooked up in a circuit. There is however a voltage drop across each resistor, which may vary depending on the resistor. View lab report lab 4 from phys 1 at university of texas, dallas. Two resistors r1 and r2 are connected in parallel if the voltages v1 and v2 across each are the same and equal to the voltage, v, across the parallel network.
Resistors in series and in parallel print this page to start your lab report 1 copy print 2 copies of this file data page object. Series and parallel circuits lab report phys 2240 studocu. The objective of this lab is to study resistances connected in series, parallel, and combination circuits. Laboratory in wave motion, electricity, magnetism and optics phys 2240 uploaded by. To study the equivalent resistances of two fundamental connections of resistors resistors in series and in parallel. Three resistors with different resistances ranging from 50. The purposes of this experiment are to test ohms law, to study resistors in. Emt 1150 lab professor aparicio carranza electrical circuits. To check kirchhoffs current law kcl from previous lab 2.
Resistors in series and parallel physics libretexts. You will be building circuits similar to the ones you will be working with in homework and exam problems. The first type of circuit you will construct is called a series circuit. Ncert class 10 science lab manual resistors in parallel. Series and parallel resistors goals to understand the fundamental difference between resistors connected in series and in parallel. In this lab we will measure and analyze currents and voltages for circuits containing a single resistor and also for two resistors in series and for two in parallel. Wires have resistance that depend on wire size, length, and type of material. The instructor will specify how to turn in the report. Series and parallel resistors california state university.
Four resistors 10 q, 20 q, 100 q, and 10 icq, composition type, 1 w. Background in a series circuit, devices are connected in such a way. To verify that resistances in series do indeed add, let us consider the loss of electrical power, called a voltage drop, in each resistor in figure 2. Oct 31, 2014 part 2 determine the current and voltage through current dividers and voltage dividers. In circuits with combinations of resistors in series and parallel, the total resistance can be found by breaking the circuit down into its simplest unit consisting of either resistor in series or parallel and then adding its total resistance back into the next simplest unit and. Wires add series resistance to circuits, just as good and bad connections add also. That is, the currents i1 and i2 through each of the resistors add to give the total current, i, flowing into and out of the network. The equivalent resistance rp of r1 and r2 in parallel. In this experiment you will make circuits that contain more than one resistor. The brightness of the light bulbs in series and parallel. Resistors when set in series and in parallel act differently in terms of carrying current and voltage. You may just need to show the resulting document on the lab computer, or the instructor may also ask for additional analysis, including a more comprehensive lab. The first procedure is a qualitative investigation of the energy stored by different arrangements of capacitors. 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.
The equivalent resistance of a set of resistors in a series connection is equal to. Experiment 3 resistors in series and in parallel print this page to start your lab report 1 copy print 2 copies of this file data page object. To practice more complicated construction of circuits. Analysis on series and parallel circuits an electrical network is an interconnection of electrical elements such as resistors, inductors, capacitors, transmission lines, voltage sources, current sources, and switches.
Resistors in series and parallel university physics volume 2. Science 14 lab 3 dc circuits theory all dc circuit analysis the determining of currents, voltages and resistances throughout a circuit can be done with the use of three rules. This experiment demonstrates how current is distributed in resistors connected in series or parallel, and thus describes how to calculate the total effective. In the 1820s, german physicist georg ohm discovered that voltage is equal to the current multiplied by the resistance across any resistor. Physics 215 experiment 11 series and parallel circuits. Series and parallel resistive circuits mercer university. The current through each resistor is the same in a series circuit. Print this page to start your lab report 1 copy print 2 copies of this file data page object. This law states that the current in a circuit is directly proportional to the potential.
Feb 22, 2015 phys 102 formal simple dc circuits lab report 1. Resistances in parallel and in series 122011 introduction in this lab you will investigate simple dc direct or constant current circuits made with a dc power supply and resistors. So their equivalent resistance let us denote it by r s is. Unit 7 lab ohms law resistances in series and parallel. 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. In this experiment, the circuit characteristics of resistors in series and parallel will be invesugated.
Appendix b computers and software appendix c equipment. The objective of this laboratory experiment is to analyze a series circuit in respect to its components and characteristics. If a problem has a combination of series and parallel, as in this example, it can be reduced in steps by using the preceding problemsolving strategy and by considering individual groups of series or parallel connections. According to ohms law, the voltage drop, v, across a resistor when a current flows through it is calculated using the equation v ir, where i equals the current in amps a and r is the resistance in ohms. The aim of this experiment is to compare the predicted and actual resistance in a circuit of resistor combinations in series and in parallel. In the series circuit, we were able to determine that each resistor in the system. Its the same capstone file that was used for the ohms law lab.
Science 14 lab 3 dc circuits dartmouth college home. Ohms law and resistors in series and parallel college of san. Physics lab report 3 lab report 3 series and parallel. In this lab, my objective was to understand the relationships between resistance, potential. View lab report physics lab report 3 from phys 212 at taylors university. In the second part of this lab well hook them together as in figure 2. To compare the current and voltage distribution in parallel and series circuits. Openstax university physicsvol 2 chapter 10, section 102 equipment. Resistors in series and parallel introductionabstract in this experiment, i used resistors. In a series circuit, the output current of the first resistor flows into the input of the second resistor. We see the resistors r 1 and r 2 are connected in series. The object of this lab is to study resistances in series and parallel.
1345 1098 736 44 68 208 90 52 1349 725 896 707 725 6 1408 1151 327 1135 968 149 903 1063 858 1411 616 443 1294 439 642 524 1190 1318 338 6 1251 1413 545 316 1377 1459 854 222 1431 949 1402 1291 197 491