For a moving coil galvanometer, the deflection in the coil is 0.05 {\rad} when a current of 10 {\mA} is passed through it. If the torsional constant of suspension wire is 4.0 \times 10^{-5} {\Nm} {\rad}^{-1}, the magnetic field is 0.01 {\T} and the number of turns in the coil is 200 , the area of each turn (in {\cm}^2 ) is : [25-Jan-2023 Shift 2]

JEE Mains 25-Jan-2023 Shift 2 Solved Paper

Section: Physics

Question : 4 of 90

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For a moving coil galvanometer, the deflection in the coil is 0.05‌rad when a current of 10‌mA is passed through it. If the torsional constant of suspension wire is 4.0×10−5‌Nm‌rad−1, the magnetic field is 0.01T and the number of turns in the coil is 200 , the area of each turn (in cm2 ) is :

[25-Jan-2023 Shift 2]

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