a slab of material of dielectric constant k has the same area A as the plates capacitor and has thickness 3/4d where d is the separation of the plates the change in capacitance when the slab is inserted between the plates is
Answers
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3
Answer:
C=
d
Aϵ
0
C
′
=
d−t+
k
t
Aϵ
0
Put t=
4
3d
;
C
′
=
3+k
4k
.
d
Aϵ
0
C
′
=
3+k
4k
.C
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