Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Electromagnetic Induction

Question:

Case : Read the passage and answer the question(s).

When bulk pieces of conductors are subjected to changing magnetic flux, induced currents are produced in them. However, their flow patterns resemble swirling eddies in water. Consider a copper plate allowed to swing like a simple pendulum between the pole pieces of a strong magnet. It is found that the motion is damped and in a little while the plate comes to a halt in the magnetic field.

What happens when rectangular slots are cut in the copper plate suspended in a magnetic field ?

Options:

The plate swings slower

The plate swings faster

The plate swings the same

The plate does not swing at all

Correct Answer:

The plate swings faster

Explanation:

As the area available to eddy current is reduced, the damping reduced.