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A potentiometer wire, 10 m long, has a resistance of 40 . It is connected in series with a resistance box and a 2V storage cell. If the potential gradient along the wire is , the resistance unplugged in the box is

a)

260

b)

760

c)

960

d)

1060



Question ID - 150848 | SaraNextGen Top Answer

A potentiometer wire, 10 m long, has a resistance of 40 . It is connected in series with a resistance box and a 2V storage cell. If the potential gradient along the wire is , the resistance unplugged in the box is

a)

260

b)

760

c)

960

d)

1060

1 Answer
127 votes
Answer Key / Explanation : (b) -

(b)

Potential gradient along wire

Current in wire.

Or 

127 votes


127