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In the meter bridge circuit shown, the n...

In the meter bridge circuit shown, the null point is obtained at `C (AC = x)` on the wire AB. If the diameter of the wire AB is doubled, the position of the new null point C' will correspond to

A

`AC' = x//2`

B

`AC' = x//4`

C

`AC' = 4x`

D

`AC' = x`

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The correct Answer is:
D
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