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When a conductor is connected in the lef...

When a conductor is connected in the left gap and known resistance in the right gap the balancing length is 50 cm. if the wire is stretched so that its length increased by `20%` new balancing length is

A

40.98 cm

B

38.23 cm

C

42.56 cm

D

48.21 cm

Text Solution

Verified by Experts

The correct Answer is:
A
`(X)/(R)=(l)/(100-l)`
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