List of top Physics Questions on AC Voltage asked in KEAM

The resonance frequency of the tank circuit of an oscillator when $ L=\frac{10}{{{\pi }^{2}}}mH $ and $ C=0.04\text{ }\mu F $ are connected in parallel is

The instantaneous voltage through a device of impedance 20 $\Omega$ is e = 80 \,sin \,100 $ \pi t$. The effective value of the current is