Question

In united states of America ,the current changes its sign after every 1÷120 seconds.What is the frequency of AC supply in USA.



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Answer 1

Answer:

Typically, either 110-volt AC (110V) or 220-volt AC (220V) is used. Most countries use 50Hz (50 Hertz or 50 cycles per second) as their AC frequency. Only a handful use 60Hz. The standard in the United States is 120V and 60Hz AC electricity.

Answer 2

Answer:

any option is there if then please share with us