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In a Wheatstone's bridge P=100Omega, Q=1...

In a Wheatstone's bridge `P=100Omega, Q=1000Omega and R = 40Omega`. If the galvanometer shows zero deflection, determine the value of S.

Text Solution

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`(P)/(Q)=(R )/(S) rArr S=(Q)/(P)xxR`
`S=(1000)/(100)xx40 rArr S=400Omega`
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