a. A charge of Q coulomb is uniformly distributed over aspherical volume of radius R metre. Obtain an expressionfor the energy of the system.b. What will be the corresponding expression for the energyneeded to completely disassemble the planet earth againstthe gravitational pull amongst its constituent particles?Assume the earth to be a sphere of uniform massdensity. Calculate this energy, given the product of themass and the radius of the earth to be 2.5 × 10³1 kg m.c. If the same charge of Q coulomb as in part (a) above isgiven to a spherical conductor of the same radius R, whatwill be the energy of the system?

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