An alternating current is given by the equation i = i1sinωt + i2cosωt. The rms current will be:

a. ½ (i12 + i22)1/2

b. (1/√2) (i12 + i22)1/2

c. (1/√2) (i1 + i2)2

d. (1/√2) (i1 + i2)

Answer: (b)

Physics Solved Feb 26 Paper Shift 1 JEE Main 2021

We know that,

Irms = I0/√2

So, Irms = √(i12 + i22)/√2

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