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How can electromagnetic damping be increased?

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in Physics – Class 12 by (135k points)
How can electromagnetic damping be increased?

(a) Increasing the magnetic density

(b) Reduce viscosity

(c) Winding the coil on the aluminum frame

(d) Increase the temperature of the coil

I got this question during an online exam.

This key question is from Electromagnetic Induction in division Electromagnetic Induction of Physics – Class 12

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Best answer
The correct option is (c) Winding the coil on the aluminum frame

For explanation: The electromagnetic damping can be increased by winding the coil on a lighter copper or aluminum frame. As the frame moves in the magnetic field, eddy currents are set up in the frame which resists the motion of the coil.

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