MCQ
An AC current is given by $I=I_1 \cos \omega t+I_2 \sin \omega t$. The root mean square current is
- A$\frac{I_1+I_2}{\sqrt{2}}$
- B$\frac{\left(I_1+I_2\right)^2}{2}$
- ✓$\sqrt{\frac{I_1^2+I_2^2}{2}}$
- D$\sqrt{\frac{I_1^2-I_2^2}{2}}$
✓
Answer
Correct option: C.
$\sqrt{\frac{I_1^2+I_2^2}{2}}$
C
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