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Question

A wire connected in the left gap of a meter bridge balance is 10Ω resistance in the right gap to a point, which divides the bridge wire in the ratio 3:2. If the length of the wire is 1. The length of one ohm wire is?

A
0.057m
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B
0.067m
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C
0.37m
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D
0.134m
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Solution

The correct option is B 0.067m
Given,
R:S=3:2
S=10Ω
Ratio, RS=32
R=32×10=15Ω
The length of 1Ω wire is given by
l=115
l=0.067m
The correct option is B.

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