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Class 12
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Electrostatic Potential and Capacitance
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Combination of Capacitors
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Parallel Combination of Capacitors
Parallel Combination of Capacitors
8 Mins
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REVISE WITH CONCEPTS
Capacitors in Parallel
Example
Definitions
Formulaes
QUICK SUMMARY WITH STORIES
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2 mins read
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Important Questions
In a parallel plate capacitor with air between the plates, each plate has an area of
6
×
1
0
−
3
m
2
and the distance between the plates is 3mm. Calculate the capacitance of the capacitor. If this capacitor is connected to a 100 V supply, what is the charge on each plate of the capacitor?
Medium
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>
The equivalent capacitance of the combination shown in figure is:
Medium
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>
Three capacitors of capacitances 2 pF, 3 pF and 4 pF are connected in parallel.
(a) What is the total capacitance of the combination?
(b)
Determine the charge on each capacitor if the combination is connected to a 100 V supply.
Medium
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>
A parallel plate air capacitor has a capacitance
C
. When it is half filled with a dielectric of dielectric constant
5
, the percentage increase in the capacitance will be
Medium
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Obtain the equivalent capacitance of the network shown in the figure. For a 300 V supply, determine the charge and voltage across each capacitor.
Hard
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>
Three capacitors each of capacitance
9
p
F
are connected in series as shown in figure.
(a) What is the total capacitance of the combination?
(b) What is the potential difference across each capacitor, if the combination is connected to a
1
2
0
v
o
l
t
supply?
Medium
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>
Derive an expression for effective capacitance of three capacitors connected in parallel.
Easy
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>
Find equivalent capacitance between points A and B :
Hard
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>
Two capacitors of 2
μ
F
and 4
μ
F
are connected in parallel. A third capacitor of 6
μ
F
is connected in series. The combination is connected across a 12 V battery. The voltage across 2
μ
F
capacitor is:
Medium
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>
Two capacitors when connected in series have a capacitance of
3
μ
F
, and when connected in parallel have a capacitance of
1
6
μ
F
. Their individual capacities are :
Medium
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>