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What is the difference between a direct current and an alternating current? How many times does AC used in India change direction in one second?

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Solution:
In direct current, the direction of current remain same at all the time. The source of direct current is also known as DC source. Example: battery
In alternating current source, the direction of current changes periodically.
In one cycle direction of current changes twice to get the same direction.
The time period of this cycle is different for different countries as per their convention and guidelines.

 

The frequency of AC in India is 50 Hz and in each cycle, it alters direction twice. Therefore, AC changes direction 2 X 50 =100 times in one second.

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