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A battery of negligible internal resista...

A battery of negligible internal resistance is connected with 10m long wire. A standard cell gets balanced on 6m length of this wire. On increasing the length of potentiometer wire by 2m, the null point with the same standard cell in the secondary will be (no series resistance in primary)

A

increased by 2m

B

decreased by 2m

C

increased by 1.2m

D

decreased by 1.2m

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-CURRENT ELECTRICITY-EXERCISE - III
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  17. A potentiometer wire has length 4 m and resistance 8Omega. The resista...

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  18. A potentiometer wire is 100 cm long and a constant potential differenc...

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