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()
( )
36
2
50
50
50 2
50 2
220 10 H 12.0 10 F
0.5104s.
tT
L
C
ω
−−
π
⎛⎞
==
=
π
=
π
×
×
⎜⎟
⎝⎠
=
The maximum charge on the capacitor decays according to
qQ
e
Rt
L
max
/
=
−
2
(this is called
the
exponentially decaying amplitude
in §315), where
Q
is the charge at time
t
= 0 (if we
take
φ
= 0 in Eq. 3125). Dividing by
Q
and taking the natural logarithm of both sides, we
obtain
ln
q
Q
Rt
L
F
H
G
I
K
J
=−
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 Spring '08
 Any
 Physics

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