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  4. The effective current I in the given circuit at very high frequencies will be A

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Q. The effective current I in the given circuit at very high frequencies will be ______APhysics Question Image

JEE MainJEE Main 2022Electromagnetic Induction

Solution:

At very high frequencies,
$X _{ C }=\frac{1}{\omega C } \approx 0$
Also $X _{ L }=\omega L \approx \infty$
Thus, equivalent circuit can be redrawn as
image
$ Z =1+2+2=5 \,\Omega $
$I =\frac{220 V }{5 \Omega}=44\, A$