# NEET Physics Alternating Current Questions Solved

An alternating current is given by the equation $i={i}_{1}\mathrm{cos}\omega \text{\hspace{0.17em}}t+{i}_{2}\mathrm{sin}\omega \text{\hspace{0.17em}}t$. The r.m.s. current is given by

(1) $\frac{1}{\sqrt{2}}\left({i}_{1}+{i}_{2}\right)$

(2) $\frac{1}{\sqrt{2}}{\left({i}_{i}+{i}_{2}\right)}^{2}$

(3) $\frac{1}{\sqrt{2}}{\left({i}_{1}^{2}+{i}_{2}^{2}\right)}^{1/2}$

(4) $\frac{1}{2}{\left({i}_{1}^{2}+{i}_{2}^{2}\right)}^{1/2}$

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