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JEE Main Physics Class 12 Electrostatic Potential and Capacitance Part 2 Questions
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© examsnet.com
Question : 2
Total: 100
A parallel plate capacitor has plate area
40
cm
2
and plates separation
2
mm
. The space between the plates is filled with a dielectric medium of a thickness
1
mm
and dielectric constant 5 . The capacitance of the system is :
[25-Jan-2023 Shift 1]
24
ε
0
F
3
10
ε
0
F
10
3
ε
0
F
10
ε
0
F
Validate
Solution:
This can be seen as two capacitors in series combination so
1
C
eq
=
1
C
1
+
1
C
2
=
1
K
∈
0
A
t
+
1
E
0
A
d
−
t
=
t
K
∈
0
A
+
d
−
t
E
0
A
=
1
×
10
−
3
5
E
0
×
40
×
10
−
4
+
1
×
10
−
3
E
0
40
×
10
−
4
1
C
eq
=
1
20
E
0
+
1
4
E
0
C
eq
=
20
×
4
E
0
24
=
10
E
0
3
F
© examsnet.com
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