Question 280: Electromagnetic Induction

Question

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

Accepted Answer

As a bar magnet falls through the pipe, an emf is induced in the body of the pipe due to change in magnetic flux. However, the free fall of the magnet will be opposed due to the development of eddy currents in accordance with Lenz's law. This process continues till the bar magnet attains a constant terminal velocity.

Answer

equal to g.

Answer

less than $\mathrm{g}$.

Answer

more than g.

Answer

zero.

Electromagnetic Induction

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

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