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JAMB Physics 1993 Question 35

Question 35

Magnetism

A current-carrying conductor experiences a force when placed in a magnetic field because the

  1. A.conductor is magnetized
  2. B.magnetic field of the current interacts with external magnetic field
  3. C.force is due to the motor principle
  4. D.electric field of the current interacts with the external magnetic field.
Show the answer and explanation

Answer: B (magnetic field of the current interacts with external magnetic field)

Explanation

The current produces its own magnetic field around the conductor, and this field combines with the external field, giving a force (the motor effect).