Question

Net impedance of an series LCR ac circuit at half power frequency will be,if resostance is R​

Answer 1

Explanation:

For an LCR circuit,

Inductive reactance: X L =2πfL=ωL

Capacitive reactance: Xc = 2πfC1 = ωC1

Total circuit reactance; Xt =Xl −Xc

Total circuit impedence: Z=

$\sqrt{r 2\ + \frac{2}{t} }$

Z=R+jX

At half of the frequency, net impedance Z=R

So, the correct answer is 'R'.