In the diagram above, if the south-poles of two magnets strokes steel bar, the polarities at T and V will respectively be
-
A.
south and north -
B.
north and south -
C.
north and north -
D.
south and south
Correct Answer: Option C
Explanation
IN magnetisation by stroking, the last touched has a pole opposite to that of the magnet used. Therefore, the poles T and V are N and N respectively