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

Discussion

Outside the outer conductor of a coaxial cable carrying equal and opposite charges, the field is

  • A.half of the field just inside the outer conductor
  • B.uniform and directed radially outward from the axis
  • C.zero
  • D.the same as that of a line charge of the inner conductor's density

Answer: C

A Gaussian cylinder drawn beyond the outer conductor encloses both charges, whose sum is zero, so the flux and hence the field vanish. This complete external screening is why coaxial cable neither radiates nor picks up interference.

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

Post your comment

Please log in or register to post a comment.