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Alternating Current

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN 2022
A circuit element X when connected to an a.c. supply of peak voltage 100 V gives a peak current of 5 A which is in...
JEE Main Physics Medium
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Q JEE Main 2022
The equation of current in a purely inductive circuit is $5 \sin \left(49 \pi t-30^{\circ}\right)$. If the inductance is 30 mH then the equation for...
JEE Main Physics Medium
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Q JEE MAIN 2022
The effective current I in the given circuit at very high frequencies will be ____A.
JEE Main Physics Hard
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Q JEE MAIN 2022
To light, a $50 \mathrm{~W}, 100 \mathrm{~V}$ lamp is connected, in series with a capacitor of capacitance $\frac{50}{\pi \sqrt{\mathrm{x}}} \mu \mathrm{F}$ with $...
JEE Main Physics Hard
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Q JEE MAIN 2022
An alternating emf $E=440 \sin 100 \pi t$ is applited to a circuit containing an inductance of $\frac{\sqrt{2}}{\pi} H$. If an a.c. ammeter is connected...
JEE Main Physics Easy
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Q JEE MAIN 2022
A direct current of 4 A and an alternating current of peak value 4A flow through resistance of $3 \Omega$ and $2 \Omega$ respectively. The...
JEE Main Physics Medium
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Q JEE MAIN 2022
To increase the resonant frequency in series LCR circuit,
JEE Main Physics Easy
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Q JEE MAIN 2022
In a series LR circuit $X_L=R$ and power factor of the circuit is $\mathrm{P}_1$. When capacitor with capacitance C such that $X_L=X_C$is put in series,...
JEE Main Physics Medium
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Q JEE MAIN 2022
An inductor of $0.5 \mu \mathrm{H}$, a capacitor of $200 \mu \mathrm{~F}$ and a resistor of $2 \Omega$ are connected in series with a 220...
JEE Main Physics Medium
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Q JEE MAIN 2022
If L, C and R are the self inductance, capacitance and resistance respectively, which of the following does not have the dimension of time ?
JEE Main Physics Easy
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