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Class 12
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Electrostatic Potential and Capacitance
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Parallel Plate Capacitor
Parallel Plate Capacitor
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Properties of Parallel Plate Capacitor
Example
Definitions
Formulaes
Capacitance of Parallel Plate Capacitor
Example
Definitions
Formulaes
Charge Distribution Between Plates of Parallel Plate Capacitors
Example
Definitions
Formulaes
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Capacitance of Conductor
9 mins
Capacitance of Two Conductor
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Capacitance of Parallel Plate Capacitor
11 mins
Charge Distribution in parrallel plate capacitor-I
8 mins
Charge distribution in parrallel plate capacitor - II
13 mins
Quick Summary With Stories
Capacitance of Parallel Plate Capacitor
4 mins read
Charge Distribution in Parrallel Plate Capacitor-I
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Important Questions
Derive the expression for capacitance of parallel plate capacitor.
Easy
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>
Two parallel infinite line charges with linear charge densities
+
λ
C/m and
−
λ
C/m are placed at a distance of 2R in free space. What is the electric field mid-way between the two line charges ?
Medium
NEET
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>
A parallel plate capacitor is charged an then disconnected from the charging battery. If the plates are now moved
farther apart by pulling at them by means of insulating handles, then
Easy
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>
A conducting sphere of radius
1
0
c
m
is charged with
1
0
μ
C
. Another uncharged sphere of radius 20 cm is allowed to touch it for sometime, after that if the spheres are separated, then surface density of charges on the spheres will be in the ratio of
Medium
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>
A parallel-plate capacitor with plate area
A
and separation between the plates
d
, is charged by a constant current
i
. Consider a plane surface of area
A
/
2
parallel to the plates and drawn symmetrically between the plates. Find the displacement current through this area.
Medium
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>
Two identical metal plates are given positive charge
Q
1
and
Q
2
(
<
Q
1
)
respectively. If they are now brought close together to form a parallel plate capacitor with capacitance
C
, the potential difference between them is
Hard
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>
A capacitor of capacitance
C
is charged to a potential difference
V
from a cell and then disconnected from it. A charge
+
Q
is now given to its positive plate. The potential difference across the capacitor is now
Medium
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>
Mention any two factors on which the capacitance of a parallel plate capacitor depends.
Medium
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>
A capacitance of
2
μ
F
is required in an electrical circuit across a potential difference of
1
.
0
k
V
. A large number of
1
μ
F
capacitors are available which can withstand a potential difference of not more than
3
0
0
V
. The minimum number of capacitors required to achieve this is :
Medium
JEE Mains
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>
Two spherical conductors A and B of radii
1
mm and
2
mm separated by a distance of
5
cm and are uniformly charged. If the spheres are connected by a conducting wire then in equilibrium condition, the ratio of the magnitude of the electric fields at the surfaces of spheres A and B is:
Medium
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>