Question

An alternating electric current has a frequency of 50 Hz. How many times does it change its direction is
one second?
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Answer 1

Answer:

In 50 Hz current it changes its direction about 100 times per second

Explanation:

In 50 Hz AC current it moves back and forth about 50 times in a second .

For example : 1 Hz AC current will only change from negative to positive or positive to negative for 1 times per second that means it will only change to positive for 1 time and again negative for 1 time per second. that means it will change its direction only twice .

For 50 Hz AC current it will change its direction about 50 × 2 times = 100 times.