Magnetic Effects of Current and Magnetism: JEE Main 2023 Physics question

JEE Main 2023 · 25 Jan, Evening shift · Q7730

JEE Main 202325 Jan, Evening shiftPhysicsMediumMagnetic Effects of Current and Magnetism165× since 2002

For a moving coil galvanometer, the deflection in the coil is 0.05 rad when a current of 10 mA is passes through it. If the torsional constant of suspension wire is

4.0\times10^{-5}\mathrm{N~m~rad^{-1}}

, the magnetic field is 0.01T and the number of turns in the coil is 200, the area of each turn (in cm

^2

) is :

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JEE Main 2023 Magnetic Effects of Current and Magnetism Question with Solution (25 Jan Evening shift, Q7730) | JEE Arc