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The potentiometer wire is of length 1200...

The potentiometer wire is of length 1200 cam and it carries a current of 60 mA. For a cell of emf 5V and internal resistance of `20Omega`, the null point of it is found to be at 1000 cm.The resistance of potentiometer wire is

A

`60Omega`

B

`120 Omega`

C

`100 Omega`

D

`80 Omega`

Text Solution

Verified by Experts

The correct Answer is:
C
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