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In given potentiometer circuit 1.02 V is...

In given potentiometer circuit `1.02 V` is balanced at `5.1cm` from A. Find potential gradient of potentiometer wire AB:

A

Option1 `0.01 V//cm`

B

Option2 `0.2 V//cm`

C

option3 `0.3 V//cm`

D

Option4 `0.4 V//cm`

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B
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