Please refer to the uploaded image for the doubt.

Asked by arjunsah797 | 19th May, 2022, 12:53: PM

Expert Answer:

When aluminium disc rotates in magnetic field created by electromagnets, eddy currents are induced in Aluminium disc .
Electromagnetic force due to interaction of eddy currents with magnetic field opposes the rotational motion of disc, hence
roational speed of disc decreases.

Answered by Thiyagarajan K | 19th May, 2022, 03:21: PM