Question

The frequency of alternating current in household electric circuit is:

• A. 50 Hz
• B. 60 Hz
• C. 100 Hz
• D. 220 Hz

Hint:

The frequency of household AC supply is 50 Hz in most countries.

Answer 1

The Correct Option is A

In most countries, the standard frequency of AC mains supply is 50 Hz. In some countries like the USA, it is 60 Hz. Thus, the correct answer is \( \mathbf{(A) 50 Hz} \).