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O lvl Phy: Magnetism

Dec 1989 P1 Q9 (simple introductory question)

Two magnets A and B are placed with their poles as shown in the figure below.



(a) Draw arrows to show the directions of the forces exerted on the north pole of magnet A by each of the poles of magnet B.

(b) Draw arrows to show the directions of the corresponding forces exerted on the south pole of B by each of the poles of A.

(c) Draw an arrow to show the direction of the resultant force exerted by magnet B on magnet A. label the arrow with the letter R.

(d) Explain why the resultant force acts in the direction you have shown in (c).

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Answer:

(a) (b) (c)



(d) This is because like poles repel.



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