Question

Derive an expression for the energy stored in a parallel plate capacitor.A parallel plate capacitor with air as dielectric is charged by a d.c. source to a potential V. Without disconnecting the capacitor from the source, air is replaced by another dielectric medium of dielectric constant 10. State with reason, how does(i) electric field between the plates and(ii) energy stored in the capacitor change.

Answer 1

Without disconnecting the capacitor from the source, air is replaced by another dielectric medium of dielectric constant