The electric current flows in two ways: Alternating current and Direct Current
Direct current flows only in one direction.
● Alternating current: The electric current whose direction changes periodically is called electric current.
● Alternating current reverses its direction periodically. ●It also changes its magnitude periodically because of the induced electromagnetic force. ●For Alternating current both magnitude and direction change. The frequency of the alternating current in the Indian power supply is 50 Hz. The time period is 1/50 = 20 msec. EXPLANATION: ● In Alternating Current (AC), the direction and magnitude of the current vary periodically. So option 2 is correct.