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A parallel plate capacitor is made of t...

A parallel plate capacitor is made of two circular plates separated by a distanc of 5mm and with a dielectric of dielectric constant 2.2 between them . When the electric field in the dielectric is `3xx10^(4)`V/m the charge density of the positive plate will be close to :

A

`3xx10^(4) C//m^(2)`

B

`6xx10^(4) C//m^(2)`

C

`6 xx10^(-7) C//m^(2)`

D

`3xx10^(-7) C//m^(2)`

Text Solution

Verified by Experts

The correct Answer is:
A, B, C
Electric field between two plates of capacitor
`E = (sigma)/(K in_(0))`
`:. Sigma = KE in_(0) = 2.2 xx3xx10^(4) xx8.85 xx10^(-12)`
`= 58.41xx10^(-8) = 6 xx10^(-7) C //m^(2)`
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