In an LCR series resonance circuit, choose th | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) Concept: In $LCR$ series circuits, resonance occurs when the inductive reactance $(X_L)$ and capacitive reactance $(X_C)$ have equal magnitude, i.

Vedclass · Accepted Answer

At resonance, the circuit is purely inductive.

Vedclass · Answer

(B) Concept: In $LCR$ series circuits, resonance occurs when the inductive reactance $(X_L)$ and capacitive reactance $(X_C)$ have equal magnitude, i.e., $X_L = X_C$.At this condition, the net reactance $X = X_L - X_C = 0$.The impedance $Z = \sqrt{R^2 + (X_L - X_C)^2}$ becomes minimum, equal to $R$.Since $Z$ is minimum, the current $I = V/Z$ reaches its maximum value.Because the net reactance is zero, the circuit behaves as a purely resistive circuit, not an inductive one.Therefore, the statement that the circuit is purely inductive at resonance is incorrect.

In an $LCR$ series resonance circuit, choose the wrong statement.

Similar Questions

Give the value of impedance in resonance condition.

In a series $LCR$ circuit,$C = 2\,\mu F$,$L = 1\,mH$,and $R = 10\,\Omega$. When the current in the circuit is maximum,what is the ratio of the energy stored in the capacitor to the energy stored in the inductor?

Which of the following combinations should be selected for better tuning of an $L-C-R$ circuit used for communication?

An inductor coil is connected to a capacitor and an $AC$ source of rms voltage $8 \, V$ in series. The rms current in the circuit is $16 \, A$ and is in phase with the emf. If this inductor coil is connected to a $6 \, V$ $DC$ battery, the magnitude of the steady current is (in $A$)

At resonance frequency,the impedance in a series $LCR$ circuit is

Vedclass Test Series

Exam Paper Generator

Online Exam Module