Question

If a copper ring is moved towards the north pole of a bar magnet, then:

• A. the ring will not be affected
• B. the ring will become warm
• C. an alternating current will flow in the ring
• D. the ring will be positively charged

Answer 1

Answer: (B)

the ring will become warm

Copper is a conductor , and according to the first law of electromagnetic induction , changing magnetic flux through the ring will induce an inductive current in the loop which will make the ring warm as heat will be generated due to its resistance.