A potentiometer consists of a wire of le...

A potentiometer consists of a wire of length 4 m and resistance 20`Omega` . If it is connected to a cell of emf 20 volt, the potential difference per unit length of the wire will be

`0.5 Vm^(-1)`

`2Vm^(-1)`

`5Vm^(-1)`

`1.0 Vm^(-1)`

Text Solution

Verified by Experts

The correct Answer is:

Potential gradient ` = epsi/L = 2/4 = 0.5 Vm^(-1)`

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