The net impedance of circuit (as shown in figure) will be :

Here \( L = \frac{50}{\pi}\text{ mH} \), \( C = \frac{10^3}{\pi}\ \mu\text{F} \), \( R = 10\ \Omega \), and \( f = 50\text{ Hz} \). Inductive reactance \( X_L = 2\pi f L = 5\ \Omega \), capacitive reactance \( X_C = \frac{1}{2\pi f C} = 10\ \Omega \). Impedance \( Z = \sqrt{R^2 + (X_C - X_L)^2} = \sqrt{10^2 + (10 - 5)^2} = \sqrt{100 + 25} = \sqrt{125} = 5\sqrt{5}\ \Omega \).