Embibe Experts Solutions for Exercise 4: Assignment Set-2

The current / flowing in the $\mathrm{AC}$ source shown in the circuit in ampere is

In the circuit shown, the value of capacitive reactance $X_C$ if net current $\left(l\right)$ is in phase with the applied voltage $\left(V\right)$ is nearly

In the given $\mathrm{AC}$ circuit, capacitance $C$ is adjustable. For what value of $C$, the current amplitude is maximised?

A capacitor is charged and connected to an ideal inductor as shown. If switch $S$ is closed at $t=0$, which of the following graphs represents, magnetic energy $U$ in the inductor as a function of time?

An $\mathrm{AC}$ current is given as $i=(2\cos \omega t+3\sin \omega t)\mathrm{A}.$ The rms current is

In a series $LCR$ circuit $V_L=3V_R$ and $V_C=2V_R$ Voltage across capacitance

The primary coil of an ideal transformer has $100$ turns and the secondary coil has $600$ turns. Then

An $\mathrm{RLC}$ series circuit is driven by a sinusoidal emf with angular frequency $\omega .$ If $\omega$ is increased without changing the amplitude of the emf the current amplitude increases. It means