JAMB Physics 2019 Objective — Question 31
Question 31 of 40 from the Joint Admissions and Matriculation Board (JAMB) Physics 2019 Objective paper, with the correct answer and a full explanation.
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If two parallel wires carry currents flowing in the same direction, the wires will
- A. attract each otherCorrect
- B. have no effect on each other
- C. repel each other
- D. both move in the same direction
Explanation
Current-carrying wires create magnetic fields around themselves; when both currents flow in the same direction, the force between the wires is attractive (opposite directions produce a repulsive force).
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