$\sqrt{R^2 + \dfrac{1}{\omega C}}$ $\sqrt{ \dfrac{1}{R} + \left( \omega C \right)^2}$ $\dfrac{1}{\sqrt{R^2 + \dfrac{1}{\omega C}}}$ $\dfrac{1}{\sqrt{\left( \dfrac{1}{R} \right)^2 + \left( \omega C \ri…