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 if you observe the system for a very long time?

Options:

The copper plate keeps on swinging

The copper plate begins to rotate

The copper plate does not enter the magnetic field

The copper plate comes to a halt.

Correct Answer:

The copper plate comes to a halt.

Explanation:

The plate comes to a halt due to energy losses due to eddy currents.