Question

A parallel plate condenser consists of two plates each of area `100cm^(2)`. They are separated by mica sheet of thickness 8.85 mm. If the relative permittivity of mica is 6. Then capacity of parallel plate condenser is
A. 50 pF
B. 40 pF
C. 60 pF
D. 30 pF

Answer 1

Correct Answer - C
`C=(Akepsi_(0))/d=(100xx10^(-4)xx6xx8.85xx10^(-12))/(8.85xx10^(-3))`
= 60 pF.