Alternating current can be defined as a current that changes its magnitude and polarity at regular intervals of time. In other words it can also be said as an electrical current that repeatedly changes or reverses its direction opposite to that of Direct Current or DC which always flows in a single direction. Alternating current can be identified in a waveform called a sine wave. These curved lines depict the electric cycles and are measured per second. The unit to measure alternating current or AC is Hertz or Hz. The first test on electric current was done using the principles laid by Michael Faraday in 1832 using a Dynamo Electric Generator.
Final Answer:
Hence, The frequency of Alternating Current in India is 50 Hz. This simply means that the magnetic field around the armature in the Ac-generators in India rotates 50 times per second