Question

For the given curve between impedance $\left(Z\right)$ and frequency $\left(f\right)$ of a series LCR circuit, the value of resistance is -

• A. $100\Omega$
• B. $200\Omega$
• C. $300\Omega$
• D. $400\Omega$

Answer 1

The correct option is B $200\Omega$


At resonance, $Z_{\text{min}}=R$.

From figure, $Z_{\text{min}}=R=200\Omega$

Hence, option $\left(B\right)$ is the correct answer.