Question

What will happen if a parallel plate capacitor is fillied with conducting slab?​

Answer 1

If it is inserted in an existing isopotential plane, it has no effect. Otherwise the electric field is changed. Think of it as a change in the plate geometry. It will cease to be a capacitor and become a conductor..!!

Answer 2

If it is inserted in an existing isopotential plane, it has no effect. Otherwise the electric field is changed. Think of it as a change in the plate geometry. It will cease to be a capacitor and become a conductor.