Calculate the self potential energy of charge q distributed over the surface of a hollow sphere of radius R. What happens to this self energy when R=0, or when the charge is an ideal point charge?
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A conducting sphere of radius R carries a charge Q. It is enclosed by another concentric spherical shell of radius 2R. Charge from the inner sphere is
Correct Answer - `-(Q^(2))/(16pi in_(0)R)`
2 Answers 1 views
Calculate the electric dipole moment of a system comprising of a charge + q distributed uniformly on a semicircular arc or radius R and a point charge
Correct Answer - `P=(2Rq)/(pi)`
2 Answers 1 views
A solid sphere of radius R has total charge Q. The charge is distributed in spherically symmetric manner in the sphere. The charge density is zero at
Correct Answer - (a). `rho(r)=(Q)/(piR^(4))r` (b) `(Qr_(1)^(2))/(4pi in_(0)R^(4))`
2 Answers 1 views
Electric charge +q is iniformaly distributed over the entire volume of a sphere of radius r. Calculate the magnetic moment of the sphere if it spins a
Correct Answer - `(1)/(5)qwr^(2),(q)/(2m)`
2 Answers 1 views
A charge +Q is uniformly distributed over a thin ring of a radius R. Find the velocity of a negative point charge -Q at the moment it passes through t
Correct Answer - `v=sqrt(1/(4piepsi_0)(2Q^2)/(Rm)`
2 Answers 1 views
A charge q is distributed over the volume of a sphere of radius R. Assuming the permittivty to be equal to unity, compare the energy stored inside the
Correct Answer - `1:5`
2 Answers 1 views
Charge of `12muC` is given toa hollow metallic sphere of radius 0.1 m. find the potential at (i) the surface of the sphere (ii) the centre of the sphe
Correct Answer - `1.08xx10^(6)V,1.08xx10^(6)V`
2 Answers 1 views
A hollow metal sphere is charged with `0.4muC` of charge and has a radius of 0.1 find the potential (i) at the surface (ii) inside the sphere (iii) at
Correct Answer - 36 kV, 3kV, 6kV
2 Answers 9 views
A charge of 1500 `muC` is distributed uniformly over a very large sheet of surface area `300m^(2)`. Calculate the electric field at a distance of 25 c
Correct Answer - `5.6xx10^(5)NC^(-1)`
2 Answers 7 views
Consider three identical metal spheres ` A, B` and `C`. Sphere `A` carries charge ` + 6q`, sphere `B` carries charge `-3q` and sphere `C` carries no c
Correct Answer - `2.25q`
2 Answers 4 views