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What determines the polarity at the ends of an electromagnet? The

What determines the polarity at the ends of an electromagnet? The
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A 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
Correct Answer: Option D
Explanation:

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