Question

if battery is removed after charging the condenser and dielectric slab introduced. what will be the effect on the capacity, charge, potential difference, energy storeed​

Answer 1

Answer:

Battery in disconnected so Q will be constant as C∝K. So with introduction of dielectric slab capacitance will increase using Q=CV,V will decrease and using U=Q22C, energy will decrease

Answer 2

If a dielectric slab of dielectric constant K is filled in between the plates of a capacitor after charging the capacitor (i.e., after removing the connection of battery with the plates of capacitor) the potential difference between the plates reduces to K1 times and the potential energy of capacitor reduces to K1 .