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Statement I: In the potentiometer circui...

Statement I: In the potentiometer circuit shown in figure. `E_1 and E_2` are the emf of cells `C_1 and C_2`, respsectively, with `E_1gtE_2`. Cell `C_1` has negligible internal resistance. For a given resistor R, the balance length is x. If the diameter of the potentiometer wire AB is increased, the balance length x will decrease.

Statement II: At the balance point, the potential difference between AD due to cell `C_1 is E_2` , the emf of cell `C_2`.

A

Statement I is true, Statement II is True, Statement II is a correct explanation for Statement I.

B

Statement I is True, Statement II is True, Statement II is not a correct explanation for Statement I.

C

Statement I is True, Statement II is False.

D

Statement I is False, Statement II is True.

Text Solution

Verified by Experts

The correct Answer is:
D
d. If the diameter of wire AB is increased, its resistance will
decrease. Hence, the potential difference between A and B
due to cell `C_1` will decrease. Therefore, the null point will be
obtained at a higher value of x.
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