Explain the different damping conditions in RLC circuits.

RLC circuits exhibit three damping conditions based on the damping ratio (zeta = R/(2*sqrt(L/C))). Overdamped (zeta > 1): slow exponential decay without oscillation. Critically damped (zeta = 1): fastest return to equilibrium without overshoot. Underdamped (zeta < 1): oscillatory response with exponentially decaying amplitude. Critical damping is often desired in measurement instruments and control systems to achieve fast settling without oscillation.