A resistance of 40 ,Omega is connected to a s | vedclass

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Question

Considering sinusoidal $AC$.

Phase at maximum value $=\frac{\pi}{2}$

Phase at rms value $=\frac{3 \pi}{4}$

Thus phase change $=\frac{3 \pi}{4

Vedclass · Accepted Answer

$2.5\, ms$

Vedclass · Answer

Considering sinusoidal $AC$.

Phase at maximum value $=\frac{\pi}{2}$

Phase at rms value $=\frac{3 \pi}{4}$

Thus phase change $=\frac{3 \pi}{4}-\frac{\pi}{2}=\frac{\pi}{4}$

$Now \,\omega=2 \pi f$

$=2 \pi 	imes 50$

$=100 \pi$

time taken $t =\frac{	heta}{\omega}=\frac{\pi / 4}{100 \pi}=\frac{1}{400} s$ $t =2.5 	imes 10^{-3}=2.5\, ms$

A resistance of $40 \,\Omega$ is connected to a source of alternating current rated $220\, V , 50 Hz$. Find the time taken by the current to change from its maximum value to $ms$ value

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