Answer Posted / zain
Frequency is the time period for chane one cycle.it is used
in AC current.when one cycle at 90 degree thet will be +
or - in AC current the second cycle of another 90 degree
will be + or - which will complete first 90 degree to 360
degree.this time period to complete one cycle that is 0
degree to 360 degree is known as frequency.The frequency of
AC current in pakistan is 50/60 Hz.
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