If r is constant, the same for all v, then the circuit element obeys ohms law. Two resistors r 1 and r 2 are connected in series if all the current that passes through r 1 also passes through. Click to order your paper objective to construct and observe the operation of series and parallel resonant circuits theory overview a resonant circuit which is in series consists of a capacitor, a resistor and an indicator connected in a loop. Two components are in series if they share a common node and if the same. Part iii currents in series and parallel circuits 1. Investigation of the characteristics of series and. Electrical dc series and parallel circuit electrical4u. 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. Lab report series and parallel circuits february 19, 2016 shafkat salam lab partners. At some frequency the inductive and capacitive reactances magnitudes becomes equal. In a parallel circuit, each device has a connection to the voltage source. This is from a physics lab report on voltage and current for resistors in series and parallel. A parallel circuit is one that requires more than one path for current flow in order to reach all of the circuit elements.
The equation for finding the resistance of a circuit in parallel can be defined as. In a parallel circuit, each device has a connection to the power supply, independent of the other device. Pdf py2404 lab report series and parallel circuits. Lab 3 circuits lab report series and parallel circuits shafkat. This is an important factor because when a series circuit is broken, all of the load devices will not function. Use pspice to determine i 1, i 2, i 3, and vo in figure 1 at f 1khz and f 10khz. Ecet 231 circuit analysis i lab 6 series parallel dc circuits objective. Laboratory in wave motion, electricity, magnetism and optics phys 2240 uploaded by. Any electrical circuit can be categorized into three different groups series, parallel and series parallel. Students successfully completing this lab will accomplish the following objectives. Series and parallel circuits lab report phys 2240 studocu.
Calculate i 1, i 2, i 3 and vo for the circuit shown in figure 1 for f 1khz and f 10khz. The current divides, with some passing through each parallel. Conclusion on series and parallel circuits conclusion on. 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. Science 14 lab 3 dc circuits dartmouth college home. The objective of this lab is to study resistances connected in series, parallel, and combination circuits. Resistors can be combined in simple circuit arrangements that increase or decrease the overall resistance in the circuit. In this experiment, we could determine the total current flowing through a series circuit and parallel circuit, the voltage across each resistor and the current flowing through a series circuit and parallel circuit.
In this lab, we will understand the very basics of circuit analysis. Direct current circuits lab experiment 7 seriesparallel combination circuits instructor. When all the resistive components of a dc circuit are connected end to end to form a single path. For one part of the lab we used two 100 ohm resistors in series and measured the following. Equation 7 gives the e ective resistance for resistors in parallel. Series circuits are sometimes called cascadecoupled or daisy chaincoupled. The lab use the ohms law iru to find the equivalent resistance. The purpose of this experiment is to experimentally determine the capacitance of three capacitors, verify series and parallel combination equations, and find the time constant for an rc circuit. You will be building circuits similar to the ones you will be working with in homework and exam problems. In this experiment, we will construct series and parallel circuits and investigate.
Switch off, before connecting the circuit of figure 6, measure the total. A series circuit is one where all the components including the battery are connected in a single, continuous loop. There are three forms of circuits that could be used. Erin phlegar and stephen few physics 102l, section. Scribd is the worlds largest social reading and publishing site. Open the dc power supply set up file provided with the lab instructions. A circuit composed solely of components connected in series is known as a series circuit. By combining r2 and r3 as a parallel circuit it acts as a simpler series circuit as the parallel is added together. Py2404 lab report series and parallel circuits name.
To compare the characteristics of series circuits to the characteristics of parallel circuits. This experiment was to determine the actual resistance of 4 series and parallel circuits by using the voltage and current across the circuits and comparing this value with the theoretical calculations of the circuit resistance. If the following resistors were replaced with the values indicated. So we were able to verify the capacitance for all the parts of experiment one.
In a series circuit, there would only be one way for the energy to flow, whereas the parallel series includes more than one path for the travelling electricity. Find the magnitude for v c for the following cases. Your answers to the questions below should show some thought. So for example, in the case of dc, the circuits can also be divided into three groups, such as series dc circuit, parallel dc circuit and series and parallel circuit series dc circuit. What do you notice about the relationship between the three voltage readings v 1, v 2, and v tot in parallel circuits. In both cases, it was simpler for the actual experiment to replace the battery and switch with a signal generator producing a square wave. Lab report on series and parallel circuit free essays. To study the equivalent resistances of two fundamental connections of resistors resistors in series and in parallel. Seriesparallel circuits lab free class notes online. To study current flow, voltage, and resistance in series and parallel circuits. Lab report series and parallel circuits electrical. For part iii of the experiment, you will use two current probes. We will also analyze the current in a series circuit and the effect of varying voltage on current. The brightness of the light bulbs in series and parallel.
The purpose of this experiment is to better familiarize us with the concepts of series parallel circuits in regards to. Increase understanding of the relationship of voltage, current 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. Then combine that equivalent resistance with the single resistor in series.
To compare the current and voltage distribution in parallel and series circuits. In this portion of the lab, we will be studying circuits containing resistors in series and in parallel. Media resources series parallel dc circuits analysis power calculations in a series parallel circuit effects of a rheostat in a series parallel circuit knowledge check 1. Parallel circuit discussion free download as word doc. Figure 5a is an example of the first category and figure 5b is an example of the second. Thats the key difference between series and parallel series circuits defined. Gain experience analyzing and verifying, by measurements, the characteristics of series parallel resistive circuits. Notice that in some nodes like between r 1 and r 2 the current is the same going in as at is coming out.
Not required equipment list qty items part numbers 1 acdc electronics lab em8656 2 d cell 1. Circuit construction kit series of three activitites inquiry based using phet in electricity unit. Construct the circuit shown in figure 1 and measure i 1, i 2, i 3 and vo. In this experiment, we could learn the difference between resistors in series and. For the rc circuit with two capacitor in series and the rc circuit with two capacitors in parallel, percent differences between the observed and theoretical values were all 9. The voltage is the same across each branch of a parallel circuit. Also if the amperage of the circuit decreases then the resistance of the overall circuit must increase. Physic lab 5 series and parallel circuits please h. Resistive elements are not connected in series or parallel.
In a series circuit, the current through each of the components is the same, and the voltage across the circuit is the sum of the voltages across each component. Resistors 3 lightbulbs 1 power supply of 3v 1 voltmeter 1 ammeter 1 cbl w ti84 calculator. The main idea i obtained from this lab was that if the amperes of a circuit increases, then the resistance of that circuit must decrease. Capacitors phy 3l alexander loera khang lam purpose.
We will observe the effect of varying resistance on current while keeping voltage constant. We will connect some series circuits and analyze them using multisim as well on hardware. Series parallel lab report series and parallel circuits. Part 2 determine the current and voltage through current dividers and voltage dividers. Science 14 lab 3 dc circuits theory all dc circuit analysis the determining of currents, voltages and resistances throughout a.
Lab, report 2 elee2790u electric circuits uoit studocu. Note, currents are measured indirectly by measuring the voltage across an. Physics 215 experiment 11 series and parallel circuits. Now once the voltage divider formula is ran across the circuit, it is as if it is being done on a series circuit and not a seriesparallel circuit. Set the input voltage to and frequency to the resonance frequency found in step 1 for circuit b in figure 7 2. Parallel circuit discussion series and parallel circuits resistor. In this lab, my objective was to understand the relationships between resistance, potential difference, and current in a simple circuit. Throughout this lab, we experimented with a circuit board which consisted of resistors and light bulbs. The current will pass through a node and will then split between the resistors. The sum of the individual branch currents equals the total current in the circuit. The reciprocal of the total resistance equals the sum of the reciprocals of the individual branch resistances. The current through and voltage across the resistor and capacitor, and inductor in the circuit were calculated and measured. The purpose of the lab is to find the equivalent resistance for components in an electrical circuit in series and parallel. At other nodes specifically the threeway junction between r 2, r 3, and r 4 the main blue current splits into two different ones.
Using your data and your answers to the questions, draw a conclusion that. The resistance of a resistive circuit element changes with temperature. To compare the differences between a series circuit and a parallel circuit. 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. The data section includes a diagram of the two circuits being. The current that enters a series circuit has to flow through every element in the circuit. 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. In that case, that is the only time you can acquire the resistance value after a slight inconvenient process. Notice the voltmeter has leads in the com and v ports and is connected from one side of the resistors to the other side. To practice more complicated construction of circuits. In this experiment, the circuit characteristics of resistors in. These arrangements are called series and parallel circuits.
Brian lavelle and winston tran abstract the purpose of this lab is to. Based on the voltage across the voltmeter and the resistance values of the resistors in the circuit, use ohms law ivr to calculate the theoretical current for each circuit. General physics iii lab page 1 of 6 pcccascade experiment. Conclusions electrical resistance and conductance resistor. Its the same capstone file that was used for the ohms law lab. Pdf py2404 lab report series and parallel circuits hassan.
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