Q. Find the time required for a 50 Hz alternating current to become its value from zero to the rms value
A) 10.0 ms
B) 2.5 ms
C) 15.0 ms
D) 5.0 ms
Explanation
(d) Given, the frequency of alternating current $f$
$= 50\ Hz$
The time for alternating current to become its rms value from zero.
$t = \frac{T}{4}$
or $t = \frac{1}{4\ f}$
or $t = \frac{1}{200}s$
or $t = 5\ ms$
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Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.