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Which of the following statement about the electromagnet shown above is correct?

Physics
JAMB 2019

Which of the following statement about the electromagnet shown above is correct?

  • A. when the current flows from A to B, the end A will be in north pole
  • B. when the current flows from A to B, the end A will be south pole
  • C. when the current flows from A to B, the end B will be south pole
  • D. none of the above
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Correct Answer: Option B
Explanation

A - B = S - N.
Also, starting end of the current is south while terminating end is North.

There is an explanation video available below.

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Explanation Video

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