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
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.