JEE Physics · Medium

Current Electricity: Shunt Calculation MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Shunt CalculationMediumQuestion 31642

Question

A galvanometer (G = 100 Ω, I_g = 1 mA) is to measure 1 A. Shunt resistance is:
  1. A
    0.1001 Ω
    Correct
  2. B
    100 Ω
  3. C
    0.01 Ω
  4. D
    10 Ω

Correct answer

0.1001 Ω

Explanation

S = I_g×G/(I−I_g) = 0.001×100/(1−0.001) = 0.1/0.999 ≈ 0.1001 Ω.