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MHT CET 2024 (4 May, Shift 2) · AC Basics: Peak, RMS & Average Values

AC Basics: Peak, RMS & Average Values question from MHT CET 2024 (4 May, Shift 2)

Q16MHT CET 2024 · 4 MAY · SHIFT 2Easy

AC Basics: Peak, RMS & Average Values

An alternating current is given by $I = 100 \sin(50\pi t)$ . How many times will the current become zero in one second?

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Answer: (a)

$\omega = 50\pi = 2\pi f \Rightarrow f = 25$ Hz.
Current becomes zero twice in every cycle.
Number of zeros per second $= 2 \times 25 = 50$
So the answer is (a) 50 times.

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