Machine-translated by Google. Questions are authored in English.
Top

Discussion

A hollow conductor is raised to 100 V. A small charge placed anywhere inside its cavity experiences

  • A.a force of magnitude proportional to 100 V
  • B.a force toward the centre of the cavity
  • C.no force, the cavity being field free
  • D.a force toward the nearest wall of the cavity

Answer: C

The whole conductor and its cavity sit at one potential, so the field within the cavity is zero and no force acts. The potential being a hundred volts rather than zero makes no difference whatever, since only the gradient of the potential produces a force and a constant has no gradient.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.