Unanswered Electrostatics Questions

Which of the following statement(s) is (are) correct? ...

A sphere of radius 1 cm has potential of 8000 V, then energy density near its surface will be__64 X 105 J/m3__8 X 103 J/m3__32 J/m3__2.83 J/m3 ...

Two particles A and B each carrying a charge Q are held fixed with a separation d between them.A particle C having mass m and charge q is kept at the middle point of line AB(a)if it is displaced through a distance x perpendic ...

A solid conducting sphere having a charge Q is surrounded by an uncharged concentric conducting hollow spherical shell. Let the potential difference between the surface of the solid sphere and that of the outer surface of the ...

A charge Q is distributed over two concentric hollow spheres of radii r and (R>r) such that the surface densities are equal.The potential at the common centre a) frac{Q({{R}^{2}}+{{r}^{2}})}{4pi {{varepsilon }_{0}}(R+r)} b ...

Two metal pieces having a potential difference of 800 V are 0.02 m apart horizontally. A particle of mass 1.96 X 10–15 kg is suspended in equilibrium between the plates. If e is the elementary charge, then charge on the par ...

Three concentric metallic spheres A, B and C have radii a, b and c (a<b<c) and surface charge densities on them are sigma ,,-sigma and sigma respectively. The valves of {{V}_{A}} and {{V}_{B}} will be *Image* a) frac{si ...

A sphere of 4 cm radius is suspended within a hollow sphere of 6 cm radius. The inner sphere is charged to a potential 3 e.s.u. When the outer sphere is earthed. The charge on the inner sphere is a) 54 e.s.u. b) frac{1}{4}, e ...

An electric dipole is placed in an electric field generated by a point charge a) The net electric force on the dipole must be zero b) The net electric force on the dipole may be zero c) The torque on the dipole due to the fie ...

What is the meaning of μμC? ...