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

Discussion

The two curl equations of Maxwell couple the electric and magnetic fields so that

  • A.the two fields always have the same magnitude
  • B.neither field can exist without a material medium
  • C.a change in one generates the other, which is what makes propagation possible
  • D.the two fields are always in the same direction

Answer: C

A changing magnetic field creates a curling electric field, whose own change creates a curling magnetic field, and the pair regenerate one another indefinitely as they travel. In the static case the time derivatives vanish and the two subjects separate entirely.

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

Post your comment

Please log in or register to post a comment.