Question

Two insulated charged spheres of radii R₁ and R₂ having charges Q₁ and Q₂ respectively are connected to each other; then 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 energy of the system unless
  q₁R₂ = q₂R₁

Answer 1

Answer: (A)

No change in the energy of the system

Answer 2

q'₁ = $\frac { \mathrm { R } _ { 1 } } { \mathrm { R } _ { 1 } + \mathrm { R } _ { 2 } }$ (q₁ + q₂)

q'₂ = (q₁ + q₂)