Essential difference between electrostatic shielding by a conducting shell and magnetostatic shielding is due to

Options

A. electrostatic field lines can end on charges and conductors have free charges.
B. lines of `vecB` can also end but conductors cannot end them.
C. lines of `vecB` cannot end on any material and perfect shielding is not possible.
D. shells of high permeability materials can be used to divert lines of `vecB` from the interior region.

Answer

A, C, D

Explanation

Inside a conductor, there is no electric field. Electric field lines can end on charges and conductors have free charges. Magnetic field lines prefer to pass through a material of high permeability but they still cannot end on one material and perfect shielding is not possible in the case of magnetic field lines.