Inductor A charged capacitor connected to an inductor causes a current to flow through the inductor until the capacitor is fully discharged. The nductor, in turn, charges up the capacitor until the capacitor is fully charged again. If Q(t) is the charge on the capacitor at time t, an Chen 1 = dQ dt f the circuit resistance is zero, then the charge Q and the current I in the circuit satisfy the differential equation dl + dt = 0, C where C is the capacitance and L is the inductance, so L 20 = 0.

icon
Related questions
Question
his problem concerns the electric circuit shown in the figure below.
Capacitor
Resistor
Inductor
www
A charged capacitor connected to an inductor causes a current to flow through the inductor until the capacitor is fully discharged. The current in the
inductor, in turn, charges up the capacitor until the capacitor is fully charged again. If Q(t) is the charge on the capacitor at time t, and I is the current,
then
I =
dQ
dt
If the circuit resistance is zero, then the charge Q and the current / in the circuit satisfy the differential equation
dI
L + = 0,
dt
where C is the capacitance and L is the inductance, so
L
d² Q
dt2
+
= 0.
Then, just as as a spring can have a damping force which affects its motion, so can a circuit; this is introduced by the resistor, so that if the resistance of
the resistor is R,
d² Q
L
+ R
dt²
dQ
dt
1
+
=
= 0.
If L = 1 henry, R = ohm, and C = 9 farads, find a formula for the charge when
(a) Q(0) = 0 and Q'(0) = 2:
Q(t) =
(b) Q(0)
= 2 and Q'(0) = 0:
Q(t) =
Transcribed Image Text:his problem concerns the electric circuit shown in the figure below. Capacitor Resistor Inductor www A charged capacitor connected to an inductor causes a current to flow through the inductor until the capacitor is fully discharged. The current in the inductor, in turn, charges up the capacitor until the capacitor is fully charged again. If Q(t) is the charge on the capacitor at time t, and I is the current, then I = dQ dt If the circuit resistance is zero, then the charge Q and the current / in the circuit satisfy the differential equation dI L + = 0, dt where C is the capacitance and L is the inductance, so L d² Q dt2 + = 0. Then, just as as a spring can have a damping force which affects its motion, so can a circuit; this is introduced by the resistor, so that if the resistance of the resistor is R, d² Q L + R dt² dQ dt 1 + = = 0. If L = 1 henry, R = ohm, and C = 9 farads, find a formula for the charge when (a) Q(0) = 0 and Q'(0) = 2: Q(t) = (b) Q(0) = 2 and Q'(0) = 0: Q(t) =
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 4 images

Blurred answer