Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) A capacitor of capacitance C containing air between its plates is charged by a cell of emf V. Keeping cell connected with plates a slab of dielectric constant K is introduced slowly to fill entire space between plates by an external agent. Then work done by external agent is - Sarthaks eConnect

A capacitor of capacitance C containing air between its plates is charged by a cell of emf V. Keeping cell connected with plates a slab of dielectric constant K is introduced slowly to fill entire space between plates by an external agent. Then work done by external agent is

A capacitor of capacitance C containing air between its plates is charged by a cell of emf V. Keeping cell connected with plates a slab of dielectric constant K is introduced slowly to fill entire space between plates by an external agent. Then work done by external agent is

A.

`1/2CV^2(K-1)`

B.

`-1/2CV^2(K-1)`

C.

`1/2KCV^2`

D.

`CV^2(K-1)`