What is the condition for resonance is L-C-R circuit? What is the impidence of L-C-R- circuit in resonance?
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im= vm/Z=vm/{R^2 + (Xc-Xl)^2}^1/2
Xc=1/wC
Xl=1/wl
when w is varied at w=w'
Xc=Xl
Z is min this frequency (ie. w') is called resonant frequency.
So, Xc=Xl
1/w'C=w'L
w'^2=1/LC
w'=1/(LC)^1/2
Xc=1/wC
Xl=1/wl
when w is varied at w=w'
Xc=Xl
Z is min this frequency (ie. w') is called resonant frequency.
So, Xc=Xl
1/w'C=w'L
w'^2=1/LC
w'=1/(LC)^1/2
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