Question

A coil of wire is held with its plane
horizontal to the earth's surface and a
small bar magnet is dropped vertically
down through it. The magnet will fall with
?
​

Answer 1

Answer:

As the magnet will fall the flux through the coil will increase ,according to lenz law, the coil will induce current in order to oppose the flux ,That current will reduce the acceleration of magnet so amagnet=g−acurrent  

Answer 2

Given : Small bar magnet is dropped vertically  down through a coil of wire.

To Find : The magnet will fall with

Solution :

As the magnet will fall vertically, the flux through the coil will increase

According to Lenz law,

The coil will induce current in order to oppose the flux.

That current will reduce the acceleration of magnet

Thus,  $\[{a_{accurate}} = g - {a_{current}}\]$  .

Hence, Magnet will fall with acceleration  $\[{a_{accurate}} = g - {a_{current}}\]$ .