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Question

A battery of emf 2V is connected across a long uniform wire AB on length 1m and resistance per unit length 2Ωm1. Two cells of emf ε1=1V and ε2=2V are connected as shown in the figure. If the galvanometer shows no deflection at point P, the distance of point P from point A is equal to:
1043622_7e647e8cdea74eeca099ca4f52d2f516.PNG

A
0
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B
50 cm
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C
100 cm
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D
25 cm
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Solution

The correct option is C 100 cm
Emf=2V
Length=2Ω/m
Two cells of ef
ϵ1=1Vϵ2=2V
1m=100cm

1380822_1043622_ans_f712db9e0d2e4ac2b8fe9ef32419afda.png

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