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Consider a 72 cm long wire AB as shown in the figure. The galvanometer jockey is placed at P on AB at a distance x cm from A. The galvanometer shows zero deflection.The value of x, to the nearest integer, is __________

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answer is 48.

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Detailed Solution

Applying Wheatstone bridge principle, We can write 126=x72−xSimplifying, we get x=48 cm

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