(a) Name the poles P, Q, R and S of the magnets in the following figures 'a' and 'b' : (b) State the…
(a) Name the poles P, Q, R and S of the magnets in the following figures 'a' and 'b' :
(b) State the inference drawn about the direction of the magnetic field lines on the basis of these diagrams.
Solution
(a) [Diagram: bar magnet showing curved field lines from N to S pole, two variants labelled a and b]
P – North pole ; Q – South pole
or
R – North pole ; S – South pole
(b) The magnetic field lines emerge from the North-pole and merge to South-pole outside the magnet. (Inside the magnet the direction is from South pole to North pole.)
Alternative answer :-
Closed curves which emerge from North pole and merge at the South pole.
