Define Alternating Current and give some examples of it

Alternating current is an electric current that periodically reverses direction in contrast to DC which flows in only one direction. The usual waveform of alternating current in most electric power circuits is a sine wave, whose positive half-period corresponds with the positive direction of the current and vice versa.

The current produced by generators or Turbine are AC currents and the current we get from our HOME power sockets are AC current. Mostly Electrical appliances like FAN, Bulb, AC, Motors are works on AC current.