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JAMB Physics 1994 Question 47

Question 47

Magnetism

If two parallel conductors carry currents flowing in the same direction, the conductors will

  1. A.attract each other
  2. B.repel each other
  3. C.both move in the same direction
  4. D.have no effect on each other
Show the answer and explanation

Answer: A (attract each other)

Explanation

The magnetic fields of parallel currents in the same direction combine so that the wires are pulled together; opposite currents repel.