In our country the frequency of AC produced for transmission is 50Hz.
a)What does it mean by frequency of an AC?
b)In one second , how many times the direction of emf change?
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Explanation:
(a) Alternating current (ac) frequency is the number of cycles per second in an ac sine wave. Frequency is the rate at which current changes direction per second. It is measured in hertz (Hz), an international unit of measure where 1 hertz is equal to 1 cycle per second.
(b) In order to change its direction in 1 sec, it takes 100 times.
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