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A parallel plate condenser is made up of...

A parallel plate condenser is made up of two plates, each of surface area `40cm^(2)`, separated by a distance of 0.4 cm. If a material of dielectric constant 10 is introduced between the plates, then the capacity of the condenser is

A

8.85 pF

B

88.5 pF

C

885 pF

D

585 pF

Text Solution

Verified by Experts

The correct Answer is:
B
`A=40cm^(2),d=0.4cm,k=10,C=?`
`C=(Akin_(0))/d=(40xx10^(-4)xx10xx8.85xx10^(-12))/(0.4xx10^(-2))`
`=88.5xx10^(-12)F`
= 88.5 pF
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