First slide

Alternating current and voltage

Question

The rms value of current given by $i = (3 \sin 100 πt + 4 \sin 200 πt) Amp .$ is ______

Moderate

Solution

$I_{rms} = \sqrt{{(\frac{3}{\sqrt{2}})}^{2} + {(\frac{4}{\sqrt{2}})}^{2}} Amp = \frac{5}{\sqrt{2}} Amp .$

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