1. If this were a real circuit, what would be the sources of experimental error? (Remember experimental error does not refer to mistakes made by you)

Introductory Circuit Analysis (13th Edition)
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  1. If this were a real circuit, what would be the sources of experimental error? (Remember experimental error does not refer to mistakes made by you)

I am having trouble with this particular question. The is a lab on Resistors in Series and Parallel. 

(Don't Forget Units!)
Questions
1. If this were a real circuit, what would be the sources of experimental error? (Remember
experimental error does not refer to mistakes made by you)
Transcribed Image Text:(Don't Forget Units!) Questions 1. If this were a real circuit, what would be the sources of experimental error? (Remember experimental error does not refer to mistakes made by you)
Part 3. Series- Parallel circuit. Now set up a circuit with R, in
parallel with R, and that combination in series with R1. The circuit
schematic is shown to the right. Put an ammeter in each of the
parallel branches and set the battery to 120 V. Your simulation circuit
should be similar to the picture below.
Part 1. A. Before closing the switch, calculate the equivalent series resistance, current in the
circuit, and voltage drops across each of the resistors. Record the theoretical values in the report.
Resistors in Series and Parallel
In this exercise we will investigate how resistors in various configurations affect current and
voltage characteristics in simple circuits.
Part 1. B, Next close the switch and record the current value shown on the ammeter in the
simulation and use the voltmeter to measure the voltage drops across each of the individual
resistors and the total drop across all three resistors. Just move the probes to the circled
connections to measure the voltage. Record these values in the report and compute the % errors
using the theoretical values as the accepted values.
READ AND FOLLOW ALL DIRECTIONS!
Refer to the lectures, or your textbook, to see how to add resistors in series and parallel and
compute currents and voltages from Ohm's Law.
Part 1. Resistors in Series
We will be using the PHET DC circuit simulation to set up the circuit
shown in the schematic to the right. Open the PHET DC Circuit
Simulation Set up a circuit with a battery, switch, ammeter, and three
resistors. It is not necessary to add extra ammeters as shown in the circuit
schematic. Set the battery to 120 V, R, = 10 N, R;= 20 2, and R = 100
2 After setting the resistance values you should notice that the color
bands will be as follows: R, = brown, black, black; R =red, black, black;
R3 = brown, black, brown. The gold band further down is the 'tolerance
but the resistors in the simulation are exact values so we won't be
Part 2. A. Parallel Resistors. Set up the three resistors in parallel.
The circuit schematic is shown to the right. Put an ammeter in each
branch next to the resistor in that branch. Try to keep the connecting
wires as short as possible. Your circuit should look similar to the
picture below. Notice R, is to the left and Ry is to the nght. Set the
battery voltage to 24 V.
Before closing the switch, calculate the equivalent resistance, the
current in the circuit and the current in each resistor. Record these
values in the report.
concerned with that The color coding for electronic components is that the first two bands are
the first two digits, the third band is a power of 10 multiplier. The colors correspond to numbers
such that black=0, brown= 1, red = 2, orange 3, yellow = 4, green 5, blue = 6, violet = 7,
grey = 8, white = 9. Thus bands of brown, black, brown would be 10 x 10' = 100. Red, black,
black would be 20 x 100 = 20 and brown, black, black would be 10 x 10 10.
Tap circult element to edit
Carcud Coratructon t DCWt Lab
PhET
Part 3. A: Before closing the switch calculate the equivalent resistance, the current in the circuit,
the voltage drops across each of the three resistors, and the current in each parallel branch.
Record these values in the report.
Set up the circuit as in the picture below. Note R, is at the top and R3 is at the bottom. Click on
"Wire Resistivity' at the right and move the slider a little to the right (no more than (1/8) of the
way across) as in the picture. Make sure the battery is set to 120 V and the resistances are as
shown It is not necessary to put wires between the resistors.
Part 3. B. Now close the switch and measure the currents and voltages in the simulation. Record
Voage
the values in the report and compute the percent errors for each of the measured values.
Tap circuil element to edt.
Crcut Centrurtion Kt DC-Vrtu La
PhET:
Part 2. B. Close the switch and record the current values for the circuit and each of the three
branches. Also use the voltmeter to meaSure the voltages across each of the three resistors.
Compute the percent errors for each of your measured currents.
Tao crcut element to edt
Ceut Constuton Kt DC V L
PHET:
Transcribed Image Text:Part 3. Series- Parallel circuit. Now set up a circuit with R, in parallel with R, and that combination in series with R1. The circuit schematic is shown to the right. Put an ammeter in each of the parallel branches and set the battery to 120 V. Your simulation circuit should be similar to the picture below. Part 1. A. Before closing the switch, calculate the equivalent series resistance, current in the circuit, and voltage drops across each of the resistors. Record the theoretical values in the report. Resistors in Series and Parallel In this exercise we will investigate how resistors in various configurations affect current and voltage characteristics in simple circuits. Part 1. B, Next close the switch and record the current value shown on the ammeter in the simulation and use the voltmeter to measure the voltage drops across each of the individual resistors and the total drop across all three resistors. Just move the probes to the circled connections to measure the voltage. Record these values in the report and compute the % errors using the theoretical values as the accepted values. READ AND FOLLOW ALL DIRECTIONS! Refer to the lectures, or your textbook, to see how to add resistors in series and parallel and compute currents and voltages from Ohm's Law. Part 1. Resistors in Series We will be using the PHET DC circuit simulation to set up the circuit shown in the schematic to the right. Open the PHET DC Circuit Simulation Set up a circuit with a battery, switch, ammeter, and three resistors. It is not necessary to add extra ammeters as shown in the circuit schematic. Set the battery to 120 V, R, = 10 N, R;= 20 2, and R = 100 2 After setting the resistance values you should notice that the color bands will be as follows: R, = brown, black, black; R =red, black, black; R3 = brown, black, brown. The gold band further down is the 'tolerance but the resistors in the simulation are exact values so we won't be Part 2. A. Parallel Resistors. Set up the three resistors in parallel. The circuit schematic is shown to the right. Put an ammeter in each branch next to the resistor in that branch. Try to keep the connecting wires as short as possible. Your circuit should look similar to the picture below. Notice R, is to the left and Ry is to the nght. Set the battery voltage to 24 V. Before closing the switch, calculate the equivalent resistance, the current in the circuit and the current in each resistor. Record these values in the report. concerned with that The color coding for electronic components is that the first two bands are the first two digits, the third band is a power of 10 multiplier. The colors correspond to numbers such that black=0, brown= 1, red = 2, orange 3, yellow = 4, green 5, blue = 6, violet = 7, grey = 8, white = 9. Thus bands of brown, black, brown would be 10 x 10' = 100. Red, black, black would be 20 x 100 = 20 and brown, black, black would be 10 x 10 10. Tap circult element to edit Carcud Coratructon t DCWt Lab PhET Part 3. A: Before closing the switch calculate the equivalent resistance, the current in the circuit, the voltage drops across each of the three resistors, and the current in each parallel branch. Record these values in the report. Set up the circuit as in the picture below. Note R, is at the top and R3 is at the bottom. Click on "Wire Resistivity' at the right and move the slider a little to the right (no more than (1/8) of the way across) as in the picture. Make sure the battery is set to 120 V and the resistances are as shown It is not necessary to put wires between the resistors. Part 3. B. Now close the switch and measure the currents and voltages in the simulation. Record Voage the values in the report and compute the percent errors for each of the measured values. Tap circuil element to edt. Crcut Centrurtion Kt DC-Vrtu La PhET: Part 2. B. Close the switch and record the current values for the circuit and each of the three branches. Also use the voltmeter to meaSure the voltages across each of the three resistors. Compute the percent errors for each of your measured currents. Tao crcut element to edt Ceut Constuton Kt DC V L PHET:
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