In the given figure of meter bridge experiment, the balancing length $AC$ corresponding to null deflection of the galvanometer is $40cm$ . The balancing length, if the radius of the wire $AB$ is doubled, will be _____ $cm$ .

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In the given figure of meter bridge experiment, the balancing length AC corresponding to null deflection of the

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Even if the radius of wire is doubled, the balancing point would not change as (x)/(l - x) = R _ 1 R _ 2 , which is independent of area in case of uniform wire. Thus, the balancing length remains the same i.e., 40cm .

In the given figure of meter bridge experiment, the balancing...

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