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.                    \[\frac{3}{5000}V/cm\]    
D.            \[\frac{1}{1000}V/cm\]
Answer» C.                    \[\frac{3}{5000}V/cm\]    


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