Question

Which of the following plots may represent the reactance of a series LC combination?
Figure

Answer 1

A series of LC circuits will reactance by,

$X=X_{L}-X_{C}=\omega L-\frac{1}{\omega C}$

$X=2 \pi f L-\frac{1}{2 \pi f C}$

The graph represents the correct relation between the reactance and f

X=0  when $X_{L}=X_{c}$

So plot d reflects the reactance of a combination of the sequence LC.

LC circuits:- LC circuits are either used to generate signals at a specific frequency, or to select a signal from a Some complex signals at a given frequency; That function is called the filter band pass.