Question

A parallel plate condenser with a dielectric of dielectric constant K between the plates has a capacity C and is 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 the proces is

Answer 1

Answer:

The energy stored in the system before and after is same

The energy stored in the system before and after is sameSo.∆E=1(cv^2)/2- 1(cv^2)/2

The energy stored in the system before and after is sameSo.∆E=1(cv^2)/2- 1(cv^2)/2 =0

The energy stored in the system before and after is sameSo.∆E=1(cv^2)/2- 1(cv^2)/2 =0So, net work done=0

thanks.