alleryIn India, the frequency of the alternating current (AC) supplied by power stations is:
A100 Hz
B50 Hz
C60 Hz
D25 Hz
Answer & Solution
Correct answer: B. 50 Hz
1. One AC cycle in the Indian supply completes in 1/50 of a second.
2. Frequency is the number of cycles per second, so $f = 50$ Hz.
3. The chapter states the frequency of AC in India is 50 Hz.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 4 "Effects of Electric Current", p.68_
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