STANDARD Physics Wheatstone Bridge MCQ Question
In a Wheatstone's network, P = 2 Ω, Q = 2 Ω, R = 2 Ω and S = 3 Ω. The resistance with which S is to be shunted in order that the bridge may be balanced is
1 Ω
2 Ω
4 Ω
6 Ω
Correct Answer
Detailed Explanation
Let x be the resistance shunted with S for the bridge to be balanced. For a balanced Wheatstone's bridge, the ratio of resistances in one pair of opposite arms is equal to the ratio in the other pair. Solving the equations gives x = 6 Ω.
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