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A 10 m long potentiometer wire has a resistance of 20 Ω. If it is connected in series with a resistance of 55 Ω and a cell of emf 4 V and internal resistance 5 Ω, the potential gradient along the wire is 

(A) 0.1 V/m 

(B) 0.08 V/m 

(C) 0.01 V/m 

(D) none of these.

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1 Answer

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by (33.7k points)

Correct option is (A) 0.1 V/m

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