Question on: JAMB Physics - 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 north pole
D
none of the above
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Correct Option: B
A - B = S - N
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