Physics, asked by Anonymous, 1 year ago

Hii

Can someone please solve this??

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Answered by parasarora77
2
as we know that capacity of a parallel plate capacitor is given by
C = ɛA/ d ----(1)
where
q = charge given to capacitor
V = potential difference
A = Area of plates
ɛ = epsilon
d = distance b/w two plates
Putting C = q/V in 1 eqn.

q/V = ɛA/d
==> V = qd/ɛA ----(2)eqn.
If a dielectric glass slab of dielectric constant K is placed b/w two plates the the capacitance is given by

C = K ɛA /d -----(3)eqn.

After placing the dielectric slab the potential becomes 1/8

So C = q/ (V/8) = 8q/V
Putting in 3 eqn.
8q/V = K ɛA/d
==> KV = 8qd/ɛA ---(4)

On dividing (4) by (2),we get
K = 8
(Sorry but I am not able to divide here, if you are unable to understand you can try to do it in you copy or ask me in comments. Please reply in comment whether you understand or not)

HOPE IT HELPS
Thanks for asking this question and improving my knowledge
Thanks Nishita from the depth of my heart.

Anonymous: yeah
parasarora77: great
Anonymous: thanks !
Anonymous: im asking one more ques
parasarora77: no need to said thanks
parasarora77: we are friends
Anonymous: if u can solve pls help
parasarora77: and also you ahve also increased my knowledge
parasarora77: ya i will try
parasarora77: ask the question
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