How many times does an AC electric current of frequency $50$ Hz change its direction?

25

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50

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100

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200

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Solution

The correct option is C $100$
After every half rotation, the direction of the electric current changes, and hence, the AC electric current of frequency $50$ changes its direction $100$ times.

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An alternating current has frequency of 50 Hz. How many times does it change its direction in one second? [2 MARKS]

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