Chapter 37, Problem 26A

If you place a metal ring in a region in where a magnetic field is rapidly alternating, the ring may become hot to your touch. Why?

To determine

To explain: the metal ring is felt hot when placed in a rapidly alternating magnetic field.

Answer to Problem 26A

As there is an alternating magnetic field, the current will be induced and produce heat energy. Due to this heat energy, the metal ring feels as hot.

Explanation of Solution

Introduction:

The current will induce when the conductor is placed in an alternating magnetic field.

The current is induced as there is a change in the magnetic field. The metal ring is a conductor and when it is placed in a rapidly changing magnetic field the current is induced. The metal ring offers resistance to the flow of electricity. This loss of energy is converted into heat energy. This heat energy is responsible to feel the metal ring as hot.

Conclusion:

The metal ring becomes hot due to the heating effect produced by induced current.