A bar magnet is allowed to fall vertically through a copper coil placed in a horizontal plane. The magnet falls with a net acceleration
A
B
Zero
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
A bar magnet is allowed to fall through a conductor, i.e., copper coil, and the magnetic the linked with coil is changing, then eddy currents are induced in it, which according to Lenz's law will be produced in such a direction so as to oppose the change in magnetic flux and hence produce damping effect. Therefore the net acceleration of magnet will be less than the acceleration due to gravity.
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