Question

Write the condition for resonance in L . C .R circuit

Answer 1

Resonance condition:

Capactive reactance=1/wC

Inductive reactance=wL

At resonance,

Capactive reactance = inductive reactance

1/wC=wL

w^2=1/LC

w=1/sqr rootLC

Frequency=1/2pi sqr rootLC

At resonance,impedance is minimum and current is maximum