Explain why, the direction of induced current in the coil of an A.C. Generator changes after every half revolution of the coil.

Answer

N/a

Explanation

After every half revolution, each side of the generator coil starts moving in the opposite direction in the magnetic field. The side of the coil which was initially moving downwards in the magnetic field, after half revolution, it starts moving in opposite direction-upwards. Similarly, the side of coil which was initially moving upwards, after half revolution, it starts moving downwards. Due to the change in the direction of motion of the two sides of the coil in the magnetic field after every half revolution, the direction of current produced in them also changes after every half revolution.