a) Find the magnitude of the electric field in a 5 cm long, 22-gauge copper wire, when a 2.0 µV potential dit is applied. The electrical resistivity of copper is 1.68 x 107 (Q-m) at 20° C. The diameter of 22-gauge wire is mm at this temperature. b) What is the resistance of this sample?

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7. a) Find the magnitude of the electric field in a 5 cm long, 22-gauge copper wire, when a 2.0 µV potential difference
is applied. The electrical resistivity of copper is 1.68 x 107 (Q-m) at 20° C. The diameter of 22-gauge wire is 0.6438
mm at this temperature.
b) What is the resistance of this sample?
Transcribed Image Text:7. a) Find the magnitude of the electric field in a 5 cm long, 22-gauge copper wire, when a 2.0 µV potential difference is applied. The electrical resistivity of copper is 1.68 x 107 (Q-m) at 20° C. The diameter of 22-gauge wire is 0.6438 mm at this temperature. b) What is the resistance of this sample?
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