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A potentiometer, wire of length 10m and...

A potentiometer, wire of length 10m and resistance 21.8ohm is connected in series with a cell of emf 22 volt internal resistance `0.2omega` and a Rheostate with maximum resistance of 22 ohm , then the minimum & maximum Potential gradient that can be obtained (V/m) are -

A

`1.09, 2.18`

B

`0.109, 0.218`

C

`0.109, 0.220`

D

`0.218, 0.220`

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The correct Answer is:
A
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