CapacitanceHard

Question

Two isolated charged metallic spheres of radii R1 and R2 having charges Q1 and Q2 respectively are connected to each other, then there is:

Options

A.No change in the electrical energy of the system
B.An increase in the electrical  energy of the system
C.Always a decrease in the electrical energy of the system
D.A decrease in electrical  energy of the system until Q1 R2 = Q2 R1

Solution

(D) Charge is flow until potential are equal and in charge flow energy is decrease
      ⇒         Q1R2 = Q2R1.

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