Question

When a sheet of metal is kept in a magnetic field, which changes from zero to a maximum value, the induced currents are setup as shown in the figure. What is the direction of magnetic field?

• A. Into the plane of the paper
• B. Out of the plane of the paper
• C. West to east
• D. South to north

Answer 1

The correct option is B

Out of the plane of the paper

1. Induced currents are clockwise.
2. So, the induced magnetic field is into the plane of the paper.
3. As it opposes the increasing inducing field, the inducing field must be out of the plane of the paper.

Hence, option (B) is the correct answer.