A solid cylinder carries a current that is uniform over its cross section. Where is the magnitude of the magnetic field the greatest?

a.) at the center of the cylinder's cross section
b.) in the middle of the cylinder
c.) at the surface
d.) none of the above

Question

A solid cylinder carries a current that is uniform over its cross section. Where is the magnitude of the magnetic field the greatest?

a.) at the center of the cylinder's cross section
b.) in the middle of the cylinder
c.) at the surface
d.) none of the above

anonymous · Answer

c)at the surface::
   Because of in this case Enclosed current is maximum;
   So, from ampere's circuital law magnetic field will be maximum at the surface of the     cylinder