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The wire of potentiometer has resistance...

The wire of potentiometer has resistance `4Omega` and length Im. It is connected to a cell of EMF 2V and internal resistance`1Omega`. Ifa cell ofEMF 1.2V is balanced byit, the balancing length will be:

A

90 cm

B

60 cm

C

50 cm

D

75 cm

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The correct Answer is:
A
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