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A potentiometer wire is 10 m long and a ...

A potentiometer wire is 10 m long and a P.D. of 6 V is maintained between its ends. The e.m.f. of the cell which balances against a length of 200 cm of the potentiometer wire is

A

1 V

B

1.2 V

C

2.4 V

D

1.5V

Text Solution

Verified by Experts

The correct Answer is:
B
`(P.D.)/("metre")=(6)/(10)= 0.6= K " " E= kL =0.6xx2=1.2 V`
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