Question

In the circuit shown in fig., the resonant frequency is

• A. $200Hz$
• B. $220Hz$
• C. $225.08Hz$
• D. $230Hz$

Answer 1

The correct option is C $225.08Hz$

The resonant frequecy of a circuit is given by f= $\frac{1}{2\pi \sqrt{LC}}$.

Given L= 0.1H C = 5$\mu$F R = 5$\Omega$.

Substituting them in formula for f gives

f= 225.08 Hz.