capacitance 
and resistance 
are connected in series, so that the charge 
stored in the capacitor at time 
obeys the differential equation:
is: an electrical system in which a quantity such as charge or current exhibits oscillatory behaviour while energy is dissipated to the environment.
is exemplified: by a circuit in which an inductance capacitance and resistance are connected in series, so that the charge stored in the capacitor at time obeys the differential equation:
and is consequently described, in the case of light damping 
by an oscillation with an exponentially decaying amplitude:
where 
and 
and 
are arbitrary constants. [P5.4, P5.5]
See critical damping. [P5.4, P5.5]
Copyright 1997, The Open University