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Accuracy of a metrebridge is maximum whe...

Accuracy of a metrebridge is maximum when the null point is obtained at the midpoint of the bridge wire. This is because

A

the error due to non uniformity of diameter of the wire is minimum in that case.

B

the error due to the end resistances is minimum.

C

the error due to heating up of wire is minimum.

D

the error due to faulty galvanometer is minimum.

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