3.113. Four identical metal plates are located in air at equal
distances d from one another. The area of each plate is equal to S.
Find the capacitance of the system between points A and B if the
plates are interconnected as shown
(a) in Fig. 3.18a; (b) in Fig. 3.18b.
A 8
A 8
(a)
(b)
Fig. 3.18.
3.114. A capacitor of capacitance C1 =-- 1.0 p.F withstands the
maximum voltage V1 = 6.0 kV while a capacitor of capacitance
C2 = 2.0 RF, the maximum voltage V2 = 4.0 kV. What voltage
will the system of these two capacitors withstand if they are connected in series?
3.115. Find the potential difference between points A and B
of the system shown in Fig. 3.19 if the emf is equal to g = 110 V
and the capacitance ratio C2/C1 = = 2.0.
Fig. 3.19.
3.116. Find the capacitance of an infinite circuit formed by the
repetition of the same link consisting of two identical capacitors,
each with capacitance C (Fig. 3.20).
c
o--Il
i c
I f 11-1
A
&
8
TC. T C -Fe
Fig. 3.20.
Fig. 3.21.
3.117. A circuit has a section AB shown in Fig. 3.21. The emf
of the source equals g = 10 V, the capacitor capacitances are equal
to C1 = 1.0 RF and C2 = 2.0 laF, and the potential difference WA -
- cp a = 5.0 V. Find the voltage across each capacitor.
3.118. In a circuit shown in Fig. 3.22 find the potential difference
between the left and right plates of each capacitor.
120