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Question 31664
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Current Electricity: Balanced Wheatstone MCQ

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Balanced WheatstoneMediumQuestion 31664

Question

In Wheatstone bridge P/Q = R/S = 2/3. If P = 100 Ω, Q = 150 Ω, R = 200 Ω, galvanometer shows:
  1. A
    Maximum deflection
  2. B
    Zero deflection
    Correct
  3. C
    Medium deflection
  4. D
    Reversed deflection

Correct answer

Zero deflection

Explanation

P/Q = 100/150 = 2/3 and R/S — if S = 300 Ω, R/S = 200/300 = 2/3. Bridge is balanced → no galvanometer current.

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