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  4. In the given arrangement of experiment on metre bridge, if AD corresponding to null deflection of the galvanometer is X, what would be its value if the radius of the wire AB is doubled?

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Q. In the given arrangement of experiment on metre bridge, if AD corresponding to null deflection of the galvanometer is $X$, what would be its value if the radius of the wire $AB$ is doubled?Physics Question Image

KCETKCET 2021Current Electricity

Solution:

The balancing length is independent of radius of the bridge wire.