D. C. Pandey Solutions for Chapter: Alternating Current, Exercise 12: Objective Problems [ Level 1 ]

Frequency of $\mathrm{AC}$ mains in India is,

Ohm's law expressed as, $E=IR$,

A choke coil and a capacitor are connected in series and the current through the combination is maximum for AC of frequency $n$. If they are connected in parallel, at what frequency is the current through the combination minimum?

The RMS value of AC current of frequency $50 \mathrm{Hz}$ is $10 \mathrm{A}$. The time taken by an alternating current in reaching from zero to maximum value and the peak value of current will be,

A capacitor is a perfect insulator for,

In a non-resonant circuit, what will be the nature of the circuit for frequencies higher than the resonant frequency?

In the series $LCR$ circuit, the voltmeter and ammeter readings are,

An $\mathrm{AC}$ source is connected to a capacitor. The current in the circuit is $I$. Now, a dielectric slab is inserted into the capacitor, then the new current is