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

Discussion

The direction of the magnetic field round a straight current-carrying conductor is

  • A.along the conductor, in the direction of the current
  • B.along the conductor, opposite to the current
  • C.circumferential, given by the right hand rule
  • D.radial, pointing away from the conductor

Answer: C

Gripping the conductor with the right hand so the thumb points along the current makes the fingers curl the way the field goes. The field therefore has no radial or axial component at all, which is what makes a coaxial Amperian loop so effective.

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

Post your comment

Please log in or register to post a comment.