A spherical cloud of charge of radius R carries total charge Q. The charge is
distributed so that its density is spherically symmetric, i.e. it is a function of the
radial distance from the centre of the sphere.
Explain why the “charge cloud” is equivalent to a point charge of Q Coulombs
at the centre of the sphere.
Determine the force experienced by an electron, charge -e, orbiting the sphere
at distance d m ( d R ) from its centre, with constant velocity v.

Question

A spherical cloud of charge of radius R carries total charge Q. The charge is
distributed so that its density is spherically symmetric, i.e. it is a function of the
radial distance from the centre of the sphere.
Explain why the “charge cloud” is equivalent to a point charge of Q Coulombs
at the centre of the sphere.
Determine the force experienced by an electron, charge -e, orbiting the sphere
at distance d m ( d > R ) from its centre, with constant velocity v.

hero · Answer

Sheesh....good luck with that...