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17. (a) After the switches are closed, the potential differences across the capacitors are
the same and the two capacitors are in parallel. The potential difference from
a
to
b
is
given by
V
ab
= Q
/
C
eq
, where
Q
is the net charge on the combination and
C
eq
is the
equivalent capacitance. The equivalent capacitance is
C
eq
=
C
1
+
C
2
= 4.0
×
10
–6
F. The
total charge on the combination is the net charge on either pair of connected plates. The
charge on capacitor 1 is
(
)
(
)
6
4
1
1
1.0
10
F
100V
1.0
10
C
q
CV
−
−
=
=
×
=
×
and the charge on capacitor 2 is
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- Spring '10
- Rebello,NobelS
- Capacitance, Charge, Energy, Electric charge, Inductor, net charge
-
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