1. Set up a slide-wire Wheatstone bridge circuit as in Fig. 1 a, using the previous small known resistance R as Rx. Leave the switch open until the instructor checks the circuit. The decade resistance box is used for R, and R. Set Rs to be initially equal to R. Use the 100 2 resistor as R Contact is made to the wire by sliding contact key b. Do not slide the key along the wire while it is pressed down. This will scrape the wire, causing it to be nonuniform. The wires connecting the resistances and the bridge should be as short as possible. 2. Turn on the power supply and balance the bridge by moving the slide wire contact until the galvanometer reads zero. Disconnect the power supply from the circuit and record L1, L2, and R. Record your values in Table 1. 3. Repeat steps 1 -2 for R, setting of (a) 2R, and (b) 0.5 R.. 4. Repeat steps 1-3 for R~ 1000.0 2. Record your values in Table 2 5. For Tables 1 and 2, compute the value of R, and find the average value. Compare the average value with the accented value by finding the nercent error
1. Set up a slide-wire Wheatstone bridge circuit as in Fig. 1 a, using the previous small known resistance R as Rx. Leave the switch open until the instructor checks the circuit. The decade resistance box is used for R, and R. Set Rs to be initially equal to R. Use the 100 2 resistor as R Contact is made to the wire by sliding contact key b. Do not slide the key along the wire while it is pressed down. This will scrape the wire, causing it to be nonuniform. The wires connecting the resistances and the bridge should be as short as possible. 2. Turn on the power supply and balance the bridge by moving the slide wire contact until the galvanometer reads zero. Disconnect the power supply from the circuit and record L1, L2, and R. Record your values in Table 1. 3. Repeat steps 1 -2 for R, setting of (a) 2R, and (b) 0.5 R.. 4. Repeat steps 1-3 for R~ 1000.0 2. Record your values in Table 2 5. For Tables 1 and 2, compute the value of R, and find the average value. Compare the average value with the accented value by finding the nercent error
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Transcribed Image Text:1. Set up a slide-wire Wheatstone bridge circuit as in Fig. 1 a, using the previous small known resistance R
as Rx.
Leave the switch open until the instructor checks the circuit.
The decade resistance box is used for R, and R. Set Rs to be initially equal to R. Use the 100 2 resistor as R.
Contact is made to the wire by sliding contact key b. Do not slide the key along the wire while it is pressed down.
This will scrape the wire, causing it to be nonuniform. The wires connecting the resistances and the bridge
should be as short as possible.
2. Turn on the power supply and balance the bridge by moving the slide wire contact until the galvanometer
reads zero. Disconnect the power supply from the circuit and record L1, L2, and R. Record your values in Table
1.
3. Repeat steps 1 -2 for R, setting of (a) 2R, and (b) 0.5 R..
4. Repeat steps 1-3 for R~ 1000.0 2. Record your values in Table 2
5. For Tables 1 and 2, compute the value of R, and find the average value. Compare the average value with the
accepted value by finding the percent error.
Transcribed Image Text:Wheatstone bridge experiment
Table 1: Original vale of Rx=100 2
Rs (2)
L1 (m)
L2 (m)
Rx (2)
Rx (2)
Average
100
0.485
0.515
50
0.351
0.649
200
0.672
0.328
%ErrorD
Table 2: Original vale of Rx=D1000 2
Rs (2)
L1 (m)
L2 (m)
Rx (2)
Rx (2)
Average
1000
0.477
0.523
500
0.325
0.675
2000
0.681
0.317
%Error=
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