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Shunt needed to convert a galvanometer into an ammeter

This type of question, asked 3 times: May 2022 S1, 16 May 2023 S2, 20 Apr 2025 S2. All 3 questions below, oldest first.

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  1. Question 1

    May 2022 S1

    41
    A galvanometer of resistance 200 Ω200\,\Omega is to be converted into an ammeter. The value of shunt resistance which allows 3% of the mains current through the galvanometer is equal to (nearly)

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  2. Question 2

    16 May 2023 S2

    25
    Two identical galvanometers are converted into an ammeter and into a milliammeter. For the same current, the value of shunt of the ammeter as compared to that of the milliammeter is

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  3. Question 3

    20 Apr 2025 S2

    35
    Only 4%4\% of the total current in the circuit passes through a galvanometer. If the resistance of the galvanometer is G , then the shunt resistance connected to the galvanometer is

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