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Class-12-science»Physics

an ac current is given by

=(3sinwt+4coswt) the rms speed will be

$I = 3 \sin ω t + 4 \cos ω t \frac{I}{5} = \frac{3}{5} \sin ω t + \frac{4}{5} \cos ω t = \cos (ω t - β), w h e r e β = \cos^{-} (\frac{4}{5}) I = 5 \cos (ω t - β) I_{m} = 5 I_{r m s} = \frac{I_{m}}{\sqrt{2}} = \frac{5}{\sqrt{2}} a m p e r e s$

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