Question

A vertical bar magnet is dropped from position on the axis of a fixed metallic coil as shown in fig-I. In fig-II the magnet is fixed and horizontal coil is dropped. The acceleration of the magnet and coil are $a_1$ and $a_2$ respectively then

• A. $a_1<g,a_2>g$
• B. $a_1>g,a_2>g$
• C. $a_1<g,a_2<g$
• D. $a_1>g,a_2<g$

Answer 1

The correct option is C $a_1<g,a_2<g$

In first situation field lines through loop increases in the downward direction, so induced lines are in upward direction so $a<g$.



In second situation also, field lines through loop increases in the downward direction, so induced lines are in upward direction so $a<g$.