The coil of a moving coil galvanometer has an effective area of 4 \times10^{-2} { \m}^{2}. It is suspended in a magnetic field of 5 \times10^{-2} {\Wb\m}^{-2}. If the deflection in the galvanometer coil is 0.2 {\rad} when a current of 5 { \mA} is passed through it then

Correct Answer is : Current sensitivity is 40radA−1

Torsional constant is 8 \times10^{-5} {\Nm} {\rad}^{-1}

Current sensitivity is 40 {\rad} {\A}^{-1}

Torsional constant is 3 \times10^{-3} {\N\m\rad}^{-1}

Current sensitivity is 40 {\deg} \A^{-1}

AP EAPCET 23-Aug-2021 Shift 2 Paper

Section: Physics

Question : 110 of 160

Marks: +1, -0

The coil of a moving coil galvanometer has an effective area of 4×10−2m2. It is suspended in a magnetic field of 5×10−2Wb‌m−2. If the deflection in the galvanometer coil is 0.2 ‌rad when a current of 5‌mA is passed through it then

Torsional constant is 8×10−5‌Nm‌rad−1
Current sensitivity is 40‌rad‌A−1
Torsional constant is 3×10−3Nm‌rad−1
Current sensitivity is 40‌deg‌A−1

Validate

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