Question

A potentiometer wire AB having length L and resistance 12 r is joined to a cell D of emf ε and internal resistance r. A cell C having emf ε/2 and internal resistance 3r is connected. The length AJ at which the galvanometer as shown in figure shows no deflection is:
(A) (11/12)L
(B) (11/24)L
(C) (13/24)L
(D) (5/12)L

Answer 1

(C) (13/24) L

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Answer 2

Answer:

(13/24)L

Explanation:

The right answer will be (13 / 24)L .

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