In an ac circuit, the r.m.s. value of current, 
is related to the peak current, 
by the relation
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
The alternating current is represented as
where, 
is the peak value of current
Now, formula for a continuous function (or waveform) 
defined over the interval 
is
Therefore,
since, 
is positive, we can write
Using a trigonometric identity to eliminate squaring of trigonometric function
but since the interval is a whole number of complete cycles (as per definition of RMS), the terms will cancel out, leaving
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