JEE Main · PhysicsHard

$In an AC circuit, the instantaneous current is given by i = 4 sin (100 π t + π /3) amperes. What is the RMS value of the current?$

A. $4 A$
B. $2 A$
C. $22 A$
D. $4/ 2 A$

Show correct answer & step-by-step solution

Correct answer: C — $22 A$

Solution

The peak current is I_{0} = 4 A . The RMS current is I_{r m s} = I_{0} / 2 = 4/ 2 = 22 A .

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