Question

A parallel plate condenser has initially air medium between the plates. If a slab of dielectric constant `5` having thickness half the distance of separation between the plates is introduced, the percentage increase in its capacity is.
A. `33.3%`
B. `66.7 %`
C. 0.5
D. 0.75

Answer 1

Correct Answer - B
`C_(0)=(epsilon_(0)A)/(d), C =(in_(0)A)/(d-t(1-1//k))`
`Delta C% =(C-C_(0))/(C_(0))xx100 %`.