A piece of material with dielectric constant K is inserted between the plates of a capacitor with capacitance Co. This is performed while the charge is kept constant. Which of the following quantities would change after the dielectric is inserted? 1. capacitance of the capacitor II. electric field between the capacitor plates III. energy stored in the capacitor IV. surface charge on the conducting plates O I, III and IV only O I, II, III and IV O I, II and III only I and III only II and III only

A piece of material with dielectric constant K is inserted between the plates of a capacitor with capacitance Co. This is performed while the charge is kept constant. Which of the following quantities would change after the dielectric is inserted? 1. capacitance of the capacitor II. electric field between the capacitor plates III. energy stored in the capacitor IV. surface charge on the conducting plates O I, III and IV only O I, II, III and IV O I, II and III only I and III only II and III only