In a bar magnet, magnetic lines of force z
A. are produced only at north pole like rays of light from a bulb
B. starts from north pole and ends at the south pole
C. emerge in circular paths from the middle of the bar
D. run continuously through the bar and outside
Answer:B
In a bar magnet, magnetic lines of force z
A. are produced only at north pole like rays of light from a bulb B. starts from north pole and ends at the south pole C. emerge in circular paths from the middle of the bar D. run continuously through the bar and outside