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Inside a uniformly charged spherical shell, the field is

  • A.the same as at the surface of the shell
  • B.the same as that of a point charge at the centre
  • C.uniform and directed radially outward
  • D.zero everywhere

Answer: D

A concentric sphere drawn inside the shell encloses no charge, so the flux through it is zero, and the spherical symmetry then forces the field itself to vanish. Outside the shell the field is the same as that of a point charge at the centre.

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