Obtain the resonant frequency and Q-factor of a series LCR circuit with `L=3.0H, C=27muF, and R=7.4 Omega`. How will you improve the sharpness of resonance of the circuit by a factor of 2 by reducing its full width at half maximum?

Explanation

To solve the problem, we will follow these steps:

### Step 1: Calculate the Resonant Frequency
The resonant frequency \( \omega_r \) of a series LCR circuit is given by the formula:

\[ \omega_r = \frac{1}{\sqrt{LC}} \]
...