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1. |
In a potentiometer circuit there is a cell of e.m.f. 2 volt, a resistance of 5 ohm and a wire of uniform thickness of length 1000 cm and resistance 15 ohm. The potential gradient in the wire is [MP PMT 1994] |
A. | \[\frac{1}{500}V/cm\] |
B. | \[\frac{3}{2000}V/cm\] |
C. | The free electrons acquire a constant drift velocity from the lower potential end to the higher potential end of the conductor |
D. | \[\frac{1}{1000}V/cm\] |
Answer» C. The free electrons acquire a constant drift velocity from the lower potential end to the higher potential end of the conductor | |