Resonant Circuits

Graph showing variation of current with frequency of $AC$ source in a series $LCR$ circuit is,

In the following circuit the readings of AC voltmeters and ammeters will be respectively-

Why the current is minimum in parallel LCR circuit?

Draw phasor diagram for parallel resonant circuit.

What is meant by resonance in an LCR circuit?

Assertion: In series LCR circuit, the resonance occurs at one frequency only.
Reason: At resonance the inductive reactance is equal and opposite to the capacitive reactance.

The inductance of the oscillatory circuit of the radio station is $10 \mathrm{mH}$ and its capacitance is $0.25 \mathrm{\mu F}$. Taking the effect of resistance negligible, wavelength of the broadcasted waves will be (velocity of light $=3.0\times {10}^8 \mathrm{m} {\mathrm{s}}^{-1},\mathrm{ }\mathrm{\pi }=3.14$)

What is resonance condition in AC circuit?

An _____ circuit, also called a  tank circuit.

In a parallel RLC circuit, the smaller reactance determine the net reactance of the circuit.

What is acceptor circuit and state its use ?

The inductance of the oscillatory circuit of the radio station is $10 \mathrm{mH}$ and its capacitance is $0.25 \mathrm{\mu F}$. Taking the effect of resistance negligible, wavelength of the broadcasted waves will be (velocity of light $=3.0\times {10}^8 \mathrm{m} {\mathrm{s}}^{-1},\mathrm{ }\mathrm{\pi }=3.14$)

The following graph represents the variation of photo current with anode potential for a metal surface. Here $I_1, I_2$ and $I_3$ represents intensities and ${\gamma }_1,{\gamma }_2,{\gamma }_3$ represents frequency for curves $1, 2$ and $3$ respectively, then

Which one is the expression of resonant frequency in a series resonant circuit?

In LCR alternating circuit, $R=10 \mathrm{\Omega }$, $X_L=100 \mathrm{\Omega }$ and $X_C=100 \mathrm{\Omega }$. What is the impedance of the circuit in Ohms?

A parallel L-C circuit comprises of a 5H inductor and $5\mathrm{\mu F}$ capacitor. The resonant frequency of the circuit in $\mathrm{Hz}$ is 

In the given figure, which point shows the resonant state?

The given figure represents the phasor diagram of a series $\mathrm{LCR}$ circuit connected to an ac source. At the instant $t\text{'}$t' when the source voltage is given by $V=V_0\cos \left(\omega t^{\text{'}}\right)$, the current in the circuit will be :

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

In a series resonant circuit, the AC voltage across resistance $R$, inductor $L$ and capacitor $C$ are $5 \mathrm{V}, 10 \mathrm{V} \mathrm{and} 10 \mathrm{V}$, respectively. The AC voltage applied to the current will be