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If the length of the wire be (i) doubled...

If the length of the wire be (i) doubled and (ii) halved, what will be effect on the position of zero deflection in a potentiometer ? Explian

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(i) When length of the wire is doubled, the potential gradient across the potentiometer wire will decrease. Due to it, the position of zero deflection will occur at longer length. (ii) The reverse will be true when length is halved.
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