Which of the following statement about the electromagnet shown above is correct?
Attached Figure / Diagram
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
Verified Correct Answer: B.
Physical Principles & Numerical Solution
A - B = S - N.
Also, starting end of the current is south while terminating end is North.
Source: Myschool Past Questions Archive (Record #55594)