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Alternating Current

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN 2019
A circuit connected to an ac source of emf $e=e_0 \sin (100 t)$ with $t$ in seconds, gives a phase difference of $\frac{\pi}{4}$. between the...
JEE Main Physics Medium
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Q JEE MAIN 2021
A series LCR circuit of R $=5 \Omega, \mathrm{~L}=20 \mathrm{mH}$ and $\mathrm{C}=0.5 \mu \mathrm{~F}$ is connected across an AC supply of 250 V , having...
JEE Main Physics Easy
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Q JEE MAIN 2021
AC voltage V(t) = 20 $\sin \omega t$ of frequency 50 Hz is applied to a parallel plate capacitor. The separation between the plates is...
JEE Main Physics Medium
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Q JEE MAIN 2021
For a series LCR circuit with R $=100 \Omega, \mathrm{~L}=0.5 \mathrm{mH}$ and $\mathrm{C}=0.1 \mathrm{pF}$ connected across $220 \mathrm{~V}-50 \mathrm{~Hz} \mathrm{AC}$ supply, the phase angle between...
JEE Main Physics Easy
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Q JEE MAIN 2022
A series LCR circuit has L = 0.01 H, R = 10 $\Omega$ and C = 1 $\mu \mathrm{F}$ and it is connected to ac...
JEE Main Physics Hard
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Q JEE MAIN 2021
The time taken for the magnetic energy to reach 25% of its maximum value, when a solenoid of resistance R, inductance L is connected to...
JEE Main Physics Easy
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Q JEE MAIN 2021
In a series LCR circuit, the inductive reactance $\left(X_L\right)$ is $10 \Omega$ and the capacitive reactance $\left(\mathrm{X}_{\mathrm{c}}\right)$ is $4 \Omega$. The resistance (R) in the...
JEE Main Physics Easy
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Q JEE-MAIN 2021
Seawater at a frequency $f=9 \times 10^2 \mathrm{~Hz}$, has permittivity $\varepsilon=80 \varepsilon_0$ and resistivity $r=0.25 \Omega \mathrm{~m}$. Imagine a parallel plate capacitor is immersed in...
JEE Main Physics Easy
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Q JEE-MAIN 2021
What happens to the inductive reactance and the current in a purely inductive circuit if the frequency is halved ?
JEE Main Physics Easy
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Q JEE-MAIN 2021
Match list I with List II
JEE Main Physics Easy
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