Question

Two insulated charged spheres of radii $R_1$ and $R_1$ having charges $Q_1$ and $Q_2$ respectively are connected to each other .There is

• A. no change in the energy of the system
• B. an increase in the energy of the system
• C. always a decrease in the energy of the system
• D. a decrease in the energy of the system unless $Q_1{R}_2=Q_2{R}_1$

Answer 1

Answer: (C)

always a decrease in the energy of the system

Whenever two bodies of different charges are connected to each other , the sharing of charge takes place , during which there is always a loss of energy ,ie, decrease in energy.