WAEC Physics 2016 Objective — Question 45
Question 45 of 50 from the West African Examinations Council (WAEC) Physics 2016 Objective paper, with the correct answer and a full explanation.
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45. What determines the polarity at the ends of an electromagnet? A. The magnitude of the current passing through the wire B. material of the core of the magnet C. material of the coil D. direction of current in the wire
- A. The magnitude of the current passing through the wire
- B. material of the core of the magnet
- C. material of the coil
- D. direction of current in the wireCorrect
Explanation
The polarity at the ends of an electromagnet is determined by the direction of current flow in the wire.
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