Question

There is a uniform magnetic field directed perpendicular and into the plane of the paper. An irregular shaped conducting loop is slowly changing into a circular loop in the plane of the paper. Then

• A. AC is induced in the loop.
• B. no current is induced in the loop
• C. current is induced in the loop in the anti-clockwise direction
• D. current is induced in the loop in the clockwise direction

Answer 1

Answer: (C)

current is induced in the loop in the anti-clockwise direction

Answer 2

Due to change in the shape of the loop, the magnetic flux linked with the loop increases. Hence, current is induced in the loop in such a direction that it
opposes the increases in flux. Therefore, induced current flows in the anticlockwise direction.