> Q. A resistance of $20Omega$ is connected to a source of alternating current rated 110 V, 150 HZ. Then the time taken by the crtrrent to changes from its maximum value to the r.m.s,. value is. – LIVE ANSWER TODAY

Q. A resistance of $20Omega$ is connected to a source of alternating current rated 110 V, 150 HZ. Then the time taken by the crtrrent to changes from its maximum value to the r.m.s,. value is.

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A resistance of $20Omega$ is connected to a source of alternating current rated 110 V, 150 HZ. Then the time taken by the crtrrent to changes from its maximum value to the r.m.s,. value is.

Solution:

$E=E_0,cos ,omega t,i=i_0,cos,(2pi,ft)$

but $i=frac{i_0}{sqrt{2}}$

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