Question

The necessary condition for resonance in L-C-R circuit is​

Answer 1

Answer:

Xl=Xc

Explanation:

Resonance occurs in a series circuit when the supply frequency causes the voltages across L and C to be equal and opposite in phase.

Answer 2

Answer:

Electrical resonance is said to take place in a series LCR circuit when the circuit allows maximum current for a given frequency of the source of alternating supply for which capacitive reactance becomes equal to the inductive reactance. The impedance of LCR circuit is minimum and hence current is maximum.