Underdamped RLC response
= Underdamped RLC response
When $R^2<4L/C$, the homogeneous <series RLC circuit> response oscillates with angular frequency $\sqrt{1/(LC)-R^2/(4L^2)}$ and envelope $e^{-Rt/(2L)}$. Its <characteristic roots> form a complex-conjugate pair with negative <real part> when $R>0$.