Multiple choice

A rectangular coil of copper wire is rotated in a magnetic field. The direction of induced current changes once in every

  1. one revolution

  2. two revolutions

  3. one-fourth revolution

  4. half revolution

  5. -

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct answer. When a rectangular copper coil is rotated in a magnetic field, the direction of the induced current changes every half revolution, due to which, the current in the coil remains the same.