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WOLFRAM|DEMONSTRATIONS PROJECT

Damping in RLC Circuits

​
quality factor Q
0.1
This Demonstration shows the variation with time of the current I in a series RLC circuit (resistor, inductor, capacitor) in which the capacitor
C
is initially charged to a voltage
V
. The resonant frequency of the circuit is
f=
8
10
Hz
and the plotted normalized current is
I
2πfVC
. There are three types of behavior depending on the value of the quality factor
Q
: overdamping when
Q<1/2
(no oscillation); critical damping when
Q=1/2
, (no oscillation and the most rapid damping); and underdamping when
Q>1/2
(damped oscillations).
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