A bar magnet is released from rest coaxially | vedclass

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Question

(B) As the bar magnet falls through the copper tube,the change in magnetic flux linked with the tube induces eddy currents in the copper walls.Accordi

Vedclass · Accepted Answer

Will move with almost constant speed

Vedclass · Answer

(B) As the bar magnet falls through the copper tube,the change in magnetic flux linked with the tube induces eddy currents in the copper walls.According to Lenz's law,these eddy currents create a magnetic field that opposes the motion of the falling magnet.As the magnet gains speed,the induced electromotive force $(EMF)$ and the resulting eddy currents increase,leading to a greater opposing magnetic force.Eventually,the upward magnetic force balances the downward gravitational force $(mg)$.At this point,the net force on the magnet becomes zero,and it reaches a terminal velocity,moving with an almost constant speed.

$A$ bar magnet is released from rest coaxially along the axis of a very long,vertical copper tube. After some time,the magnet:

Similar Questions

$A$ hollow metal pipe is held vertically and a bar magnet is dropped through it with its length along the axis of the pipe. The acceleration of the falling magnet is ($g=$ acceleration due to gravity).

What are eddy currents? Who discovered eddy currents?

Eddy currents are used in

The plane of eddy currents makes an angle with the plane of magnetic lines of force equal to $...^o$.

We can reduce eddy currents in the core of a transformer by:

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