Question

An alternating current is given by the equation i= i₁ cos ω t + i₂ sin ω t.The r.m.s. current is given by
(a) $\frac{1}{\sqrt{2}} (i_1+i_2)$
(b) $\frac{1}{\sqrt{2}} (i_1+i_2)^2$
(c) $\frac{1}{\sqrt{2}} (i^2_1+i^2_2)^{1/2}$
(d) $\frac{1}{2} (i^2_1+i^2_2)^{1/2}$

Answer 1

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