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A potentiometer consists of a wire of le...

A potentiometer consists of a wire of length 4 m and resistance `10Omega`. It is connected to a cell of emf 2V.The potential gradient of the wire is

A

`0.5 V//m`

B

`10 V//m`

C

`2V//m`

D

`5V//m`

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The correct Answer is:
A
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