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  • In the given AC circuit, when switch S is at position 1, the source emf leads current by .

In the given AC circuit, when switch S is at position 1, the source emf leads current by \frac{\pi}{6}. Now, if the switch is at position 2, then

 

Option: 1

current leads source emf by \frac{\pi}{4}


Option: 2

current leads source emf by \frac{\pi}{3}


Option: 3

source emf leads current by \frac{\pi}{4}


Option: 4

source emf leads current by \frac{\pi}{3}


Answers (1)

best_answer

\mathrm{\begin{aligned} & \tan \frac{\pi}{6}=\frac{\mathrm{x}_{\mathrm{L}}}{\mathrm{R}}=\frac{1}{\sqrt{3}} \\ & \mathrm{R}=3 \Omega \\ & \tan \theta=\frac{\mathrm{x}_{\mathrm{c}}}{\mathrm{R}}=1 \Omega \\ & \phi=\frac{\pi}{4} . \end{aligned}}

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shivangi.shekhar

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