In the Wheatstone's bridge shown, P = 2 Ω Ω , Q = 3 Ω Ω , R = 6 Ω Ω and s = 8 Ω Ω . In order to obtain balance, shunt resistance across 'S' must be
Text Solution
Verified by ExpertsThe correct answer is:
D
Let the value of shunt be r. Hence the equivalent resistance of branch containing S will be 
In balance condition, 
. This gives 
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