081121

Question : A parallel plate condenser with a dielectric constant K between the plates has a capacity C and charged to a potential V volt. The dielectric slab is slowly removed from, between the plates and then reinserted. The net work done by the system in this process is 

a)zero

b) ½(K-1)CV²

c) CV²(K-1)/K

d) (K-1)CV²

^{Doubt by Eshani}

Ans : a) Zero

Detailed Solution : Coming Soon.