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JEE Physics · Medium

Current Electricity: Meter Bridge MCQ

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Meter BridgeMediumQuestion 31633

Question

In a metre bridge experiment, balance is at 40 cm. If resistance in left gap is 8 Ω, resistance in right gap is:
  1. A
    12 Ω
    Correct
  2. B
    20 Ω
  3. C
    5 Ω
  4. D
    3.2 Ω

Correct answer

12 Ω

Explanation

P/Q = l/(100−l). 8/Q = 40/60. Q = 8×60/40 = 12 Ω.

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