[" The charge flown through the cell on closing the "],[" key "K" is equal to "],[qquad [|[|c|],[C],[=[[|c||[|c],[(sqrt(C))/(C)]],(K)/(C)]]]]

The capacitance of the systemis C , if the key is closed, the total energy loss is equal to :

Three plates A, B and C are placed close to each other with +Q charge given to the middle plate. The inner surfaces to A and C can be connected to earth through plate D and keys K_(1) and K_(2) . The plates D is a dielectric slab with dielectric constant K_(1) then the charge that will flow through plate D and keys K_(1) and K_(2) . The plate D is a dielectric slab with dielectric constant K, then the charge that will flow though plate D when K_(2) is closed and K_(2) is open is

What is the relation between K_(P) and K_(C) , Give one example for which K_(P) is equal to K_(C) ,