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
Correct Answer: Option B
B. when the current flows from A to B, the end A will be south pole
Explanation
A – B = S – N.
Also, starting end of the current is south while terminating end is North.