The current in the primary circuit of a potentiometer is 0.2 A. The specific resistance and cross-section of the potentiometer wire are 4 × 10 –7 ohm meter and 8 × 10 –7 m 2 respectively. The potential gradient will be equal to:
Text Solution
Verified by ExpertsThe correct answer is:
C
x = 
= 
= 
= 
x = 
= 
= 0.1 V/m.
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