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 volts. The dielectric slab is slowly removed from between the plates and then reinserted. The net work done by the system in this process is
-
½ (K – 1) CV2
-
CV2 (K – 1) /K
-
(K –1) CV2
-
zero
Solution
D.
zero
