Question

Capacity of a parallel plate capacitor with a medium of dielectric constant 8 is 12 µF. If the medium is removed, then capacity of the capacitor would be ____________.

Options

• 9.6 µF

• 1.5 µF

• 0.67 µF

• 18 µF

Answer 1

Capacity of a parallel plate capacitor with a medium of dielectric constant 8 is 12 µF. If the medium is removed, then capacity of the capacitor would be 1.5 µF.

Explanation:

`"Capacity of plate in medium"  "C" _"m" = ("k"epsilon_0 "A")/"d"`     ....(i)

`"If medium is removed C" = (epsilon_0 "A")/"d"`     .....(ii)

From (i) and (ii) C_m = k.C

`"C" = "C"_"m"//"k"`

`= (12 mu"F")/8`

` = 1.5 mu "F"`