Resistors in series and parallel lab report discussion

In addition, the expected distribution of the voltage and current to each resistor in a network will also be tested. 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. Series and parallel circuit elements research paper 1580 words. 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. If r is constant, the same for all v, then the circuit element obeys ohms law. To use ohms law to calculate equivalent resistance of series and parallel circuits. The voltage drop across the battery vt will be the total sum of the individual drops across each of the 3 resistors, and. Graph 2 of current vs voltageresistance can be found in the appendix a. Resistors are in parallel if their terminals are connected to the same two nodes. The presence of branch lines means that there are multiple pathways by which charge can traverse the external circuit. Resistors in series and parallel physics lab report. Ohms law iiiresistors in series and parallel v rrr 2 1 2 3 e v 1 v 3 v t i 1 i i t 2 i 3 figure 1.

To verify that voltage and current are directly proportional using a 1k. In this experiment, we could learn the difference between resistors in series and parallel. The current flow is expected to be uniform throughout the series circuits, but will be. Physics 215 experiment 11 series and parallel circuits 45 5. The resistance of a resistive circuit element changes with temperature.

Derive expressions for total capacitance in series and in parallel. A handson approach applications of gpu computing series axelson j. Sep 02, 2011 the result of this lab is the equivalent resistance of the components in a electrical circuit in series equals to the sum of all the resistors. Circuitlab may not work as expected in your web browser. 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. Each is connected directly to the voltage source just as if it were all alone, and so the total capacitance in parallel is just the sum of the individual capacitances. Various parts of a combination circuit can be identified as series or parallel, reduced to their equivalents, and then further reduced until a single resistance is left.

Notice the voltmeter has leads in the com and v ports and is connected from one side of the resistors to the other side. Most circuits have more than one component, called a resistor that limits the flow of charge in the circuit. Move the voltmeter leads to the spring clips on either side of the first resistor and press the pushbutton switch and record the voltage across the resistor in the lab report section. Meaning, voltage across each resistor is the same as the voltage across the parallel combination. A measure of this limit on charge flow is called resistance. Complete the entries corresponding to the theoretical values. To understand the resonance frequency, cutoff frequency, bandwidth and quality factor of a resonance. This can be compared to the theoretical equivalent series resistance of 200 once the resistors were changed to being in parallel, the power was calculated to be 0. Use the appropriate list of major features for series or parallel connections to solve for the unknowns. Consider the circuit in figure 22 when n3 and the component values shown in table 22. Discussion for e total power dissipated by the resistors is also 179 w.

Oct 07, 2015 resistors in series and parallel combinations. 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. Determine whether resistors are in series, parallel, or a combination of both series and parallel. Parallel resistors part 1 parallel resistors part 2. D cells and current through the circuit in the lab report section. After that the student will investigate the voltage and current relationships in a combination seriesparallel circuit. In the second part of this lab well hook them together as in. Physic lab 5 series and parallel circuits please help me to correct my lab report and write the conclusion abstract. Hopefully you remember how to find the resistance of an object by measuring the voltage and current from last lab. Not required equipment list qty items part numbers 1 acdc electronics lab em8656 2 d cell 1. More complex connections of resistors are sometimes just combinations of series and parallel. For one part of the lab we used two 100 ohm resistors in series and measured the following.

Several capacitors may be connected together in a variety of applications. Identify series and parallel parts in the combination of connection of capacitors. Agilent u8031a dc power supply agilent 34461a digital multimeter i ntroduction parallel circuits. Theory the purposes of this experiment are to test ohms law, to study resistors in series and parallel, and to learn the correct use of ammeters and voltmeters. The equivalent overall resistance is smaller than the smallest parallel resistor. Parallel circuit discussion series and parallel circuits. Physics 215 experiment 11 series and parallel circuits. Using equations 4 and 7, we can nd all the properties of any circuit containing resistors in series or parallel or any combination of the two. Resistance in wires reduces the current and power delivered to a resistor. Parallel lab included, labeled and organized all parts of the lab report. Introduction electricity is an essential part of the modern life experience, and as an engineer it is essential to know how it behaves and responds to changes in its trajectory.

Open the dc power supply set up file provided with the lab instructions. The total voltage drop in the external circuit is equal to the gain in voltage as a charge passes through the internal circuit. Parallel and series resistor circuit analysis worked example using ohms law reduction doc physics duration. Laboratory in wave motion, electricity, magnetism and optics phys 2240 uploaded by. For example, in the series circuit, the two resistors are both 10. In a parallel circuit, a charge does not pass through every resistor. Rc circuits 2 two circuit elements are in series if all of the current flowing through one also flows through the other. Series and parallel resistors california state university. If you understand what we are doing in this experiment, you will be all set to do well on the midterm questions about circuits. Series and parallel resistors physics 212 lab the circuit board in front of you has three circuits on it. Good equipments should be used such as the resistors, connecting wires, voltage supply and multitester. To study the behavior of series and parallel lc circuits at resonance. In figure 1, all of the current flowing from the battery must also flow through the resistors r. Data section includes a diagram of the series and the parallel circuit.

A resistor is an electrical componentdevice that has electrical resistance. 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. Physic lab 5 series and parallel circuits please h. Three resistors r1, r2, and r3 connected in series. Conclusion on series and parallel circuits conclusion on. Two resistors r 1 and r 2 are connected in series if all the current that passes through r 1 also passes through. Conclusions electrical resistance and conductance resistor. You will be building circuits similar to the ones you will be. To check kirchhoffs current law kcl from previous lab 2. In figure 1, all of the current flowing from the battery must also flow through the resistors r 1 and r 2. Examine the circuit diagram to make this assessment. It is slightly more difficult to use an analog multitester than a digital multitester when accuracy is being considered. Resistors in series and parallel physics lab report series and parallel resistors lab physics capacitor and resistors programming massively parallel processors. The purpose of this experiment is to learn how to use a digital multimeter to obtain measurements for voltage, current, and resistance and how to set up resistors in series and parallel connections.

And we can see the relationship of the resistances, current and voltage in circuit which related to ohms law. Series and parallel circuit elements research paper 1580. Resistors can be combined in simple circuit arrangements that increase or decrease the overall resistance in the circuit. Series and parallel circuits objectives to study current flow and voltages in series and parallel circuits.

The brightness of the light bulbs in series and parallel. Series and parallel circuits lab report phys 2240 studocu. To study the equivalent resistances of two fundamental connections of resistors resistors in series and in parallel. Consider the circuit in figure 21 when n3 and the component values shown in table 21. To compare the current and voltage distribution in parallel and series circuits.

This is from a physics lab report on voltage and current for resistors in series and parallel. Resistance, ohms law, and i v curves lab report phys. This is from a physics lab report on voltage and c. Experiment 2 resistors in series and parallel connections 1 lab date 7617 report date 71117 inderjit kaur phy2049l section 8 lab instructor udeni purpose.

To calculate the voltages and currents in simple circuits involving only resistors using the rules for adding series and parallel resistors. Have the instructor check your circuit before proceeding. 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. Circuitlab has no problem simulating big circuits of resistors, voltage sources, and current sources. 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. To understand the resonance frequency, cutoff frequency, bandwidth and quality factor of a resonance circuit. Resistors in series and parallel boundless physics. A parallel circuit is one that has two or more paths for the electricity to flow. Get an idea of how to write about ohms law physics lab report here. Connect the two resistors on the circuit board that are marked 150 ohms and 700 ohms as shown in figure 6a. Note that the resistors are connected to each other at two points. The result of this lab is the equivalent resistance of the components in a electrical circuit in series equals to the sum of all the resistors.

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. In some cases when we do not get the desires or specific resistor values we have to either use variable resistors such as potentiometers or presets to obtain such precise values. In some cases when we do not get the desires or specific resistor values we have to either use variable resistors such. The latter portion simplifies the law for beginners by delineating the absolute basic concepts for beginners. General physics iii lab page 1 of 6 pcccascade experiment. This can be compared to the theoretical equivalent series resistance of.

In this lab, we will be studying circuits containing resistors in series and. Strategy and solution for e the total power can also be calculated in several ways. Series and parallel resistive circuits physics lab viii objective in the set of experiments, the theoretical expressions used to calculate the total resistance in a combination of resistors will be tested experimentally. In other words, the loads are parallel to each other. Copy your spreadsheet results and paste them into the document. Resistors in series and parallel arrangements 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. Calculate total resistance of a circuit that contains a mixture of resistors connected in series and in parallel. Along the way, you will establish that certain measurements are a ected by the way in which circuit elements are connected to each other. The voltage drop across the battery vt will be the total sum of the individual drops.

Resistors in series when two resistors are in series, they have the same current running through them. Calculate the effective capacitance in series and parallel given individual capacitances. Dec 12, 2012 series resistorcapasitor circuit experiment 7 1. Load the simulation by clicking open in editor above, and then click. Parallel circuit is a circuit wherein each device is placed in its own separate branch. 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. Series and parallel connections the objectives of this lab are. The instructor will specify how to turn in the report. In figure 2, the current flowing through r 4 does not flow through r 5 and vice. Resistance, ohms law, and i v curves lab report studocu. To practice more complicated construction of circuits. The aim of this experiment is to compare the predicted and actual resistance in a circuit of resistor combinations in series and in parallel. The power dissipated by each resistor is considerably higher in parallel than when connected in series to the same voltage source. University of north carolina at charlotte department of.

A formal lab report on lab exercises 5, and 6 will be required. Read this essay sample on series and parallel circuits lab report. Resistors in series and parallel combinations electronics post. 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. In preparation for the lab compute the required quantities. Apply the knowledge you have about series and parallel connection of resistors to determine the effective resistance of circuits. 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. Resistors can be used in electric circuits for protection of components, voltage division or current.

Ohm discovered that the ratio of voltage to current in a metallic resistor is constant as long as the temperature is held constant. These arrangements are called series and parallel circuits. Repeat steps 46, but leave the ammeter on the 10 a range. Series and parallel resistors goals to understand the fundamental difference between resistors connected in series and in parallel. This experiment will have the student investigate the characteristics of parallel circuits. Equation 7 gives the e ective resistance for resistors in parallel. Resistors are in series if the same current must pass sequentially through them. The equivalent resistance rp of r1 and r2 in parallel. Each charge passing through the loop of the external circuit will pass through a single resistor present in a single branch. Three resistors with different resistances ranging from. This experiment should show you the difference between resistors in series and parallel. Purpose 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.