No electronic gadgets are allowed into the examination Hall,
Symbols used in the questions carry their usual meanings.
GROUP-A
1.
Choose the correct answer out of the four probables given at the end
of each bit:
[1x7
(a) If C, and C are the capacity of a capacitor with air and glass as the dielectric
then the dielectric constant of glass is
C
(i) CC.
(ii)
olo
Co
(iii)
(iv)
Co
C-Co
(c
С
Answers
Answered by
0
Answer:
Explanation:
Capacitance =
d
ϵA
Initially for air: C=
d
ϵ
o
A
Finally for air: C=
d
ϵ
o
4
3A
=
4
3C
For dielectric: C
k
=
d
Kϵ
o
4
A
=
4
KA
We can consider them as two capacitors in series which gives,
C
net
=
4
3C
+
4
KC
=
4
(K+3)C
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