Rms value of current is equal to 3 sin omega t + 4 cos omega t is given by
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What I see is a is a steady state DC current, 2 Amps, and a simple sinewave with a peak amplitude of 3 amps. This follows the form of:
To find the RMS value you need to take the square root of the sum of the squared values. As an integral then this would look like:
I(rms) = square root of (
)
Performing the math will give you:
Thus I (rms) = Sqrt. ( 2^2 + 3^2/2) = Sqrt. ( 4/2 + 9/2) = Sqrt. (17/2)
I(rms) = 2.9155 amps, just as given by Laurens De Wilde, below.
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Answer: answer is first option
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