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JEE Main 2022 (Online) 28th July Morning Shift
Numerical
+4
-1
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The frequencies at which the current amplitude in an LCR series circuit becomes $$\frac{1}{\sqrt{2}}$$ times its maximum value, are $$212\,\mathrm{rad} \,\mathrm{s}^{-1}$$ and $$232 \,\mathrm{rad} \,\mathrm{s}^{-1}$$. The value of resistance in the circuit is $$R=5 \,\Omega$$. The self inductance in the circuit is __________ $$\mathrm{mH}$$.

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2
JEE Main 2022 (Online) 27th July Morning Shift
Numerical
+4
-1
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To light, a $$50 \mathrm{~W}, 100 \mathrm{~V}$$ lamp is connected, in series with a capacitor of capacitance $$\frac{50}{\pi \sqrt{x}} \mu F$$, with $$200 \mathrm{~V}, 50 \mathrm{~Hz} \,\mathrm{AC}$$ source. The value of $$x$$ will be ___________.

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3
JEE Main 2022 (Online) 26th July Morning Shift
Numerical
+4
-1
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The effective current I in the given circuit at very high frequencies will be ___________ A.

JEE Main 2022 (Online) 26th July Morning Shift Physics - Alternating Current Question 63 English

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4
JEE Main 2022 (Online) 30th June Morning Shift
Numerical
+4
-1
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A series LCR circuit with $$R = {{250} \over {11}}\,\Omega $$ and $${X_L} = {{70} \over {11}}\,\Omega $$ is connected across a 220 V, 50 Hz supply. The value of capacitance needed to maximize the average power of the circuit will be _________ $$\mu$$F. (Take : $$\pi = {{22} \over 7}$$)

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