Question

A parallel plate condenser with a 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 this process is

• A. Zero
• B. $\frac { 1 } { 2 } ( \mathrm {~K} - 1 ) \mathrm { CV } ^ { 2 }$
• C.
• D.

Answer 1

Answer: (A)

Zero