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MHT CET 2022 (11 Aug, Shift 2) · Kirchhoff's Laws & Measuring Instruments

Kirchhoff's Laws & Measuring Instruments question from MHT CET 2022 (11 Aug, Shift 2)

Q101MHT CET 2022 · 11 AUG · SHIFT 2Easy

Kirchhoff's Laws & Measuring Instruments

A galvanometer of resistance $200\ \Omega$ 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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Answer: (a)

$S = \frac{I_g G}{I - I_g}$ with $I_g = 0.03I$ .
$S = \frac{0.03 \times 200}{0.97} = 6.19\ \Omega \approx 6\ \Omega$
So the answer is (a) $6\ \Omega$ .

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