Page 127 - Physics_Form_2

Magnetism

4. Like poles repel and unlike poles Revision Exercise 3
attract. Choose the most correct answer in

5. The ‘tiny magnets’ in a material are questions1-2.
called dipoles. A group of dipoles 1. Why are magnets often fitted to
forms a domain. the doors of refrigerators and some
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6. A magnetic field is the region around cupboards?
a magnet within which magnetic (a) To keep away heat.
force can be experienced. Magnetic (b) To keep the inside environment
warm.
fields are represented by lines of
action of magnetic force called field (c) To keep the door tightly closed.
lines. (d) To keep iron away.

7. Points at which the net magnetic field 2. The following are applications of
magnetism in daily life, EXCEPT:
is zero are called neutral points. (a) Magnets are used to trap non-
8. Materials that can redirect field lines metallic objects during flour

are called permeable materials. packing.
9. The angle between the resultant (b) VHS tapes are manufactured as
magnetic field direction and a result of magnetism.
horizontal component of the field (c) Banks make use of magnetic
is called the angle of inclination, I, ink on cheques.
or dip angle. (d) Magnets are used to lift scrap
metals.

3. Match each item in column A against its corresponding item from column B by
writing the correct response in the space provided.

Column A Answer Column B
(a) Magnetic materials (i) Like poles attract, unlike
(b) Law of polarity poles repel

(c) Magnetic shielding (ii) Magnetic field is zero
(iii) Redirects magnetic lines
(d) Neutral point of force
(e) Aluminium (iv) Strong magnet
(v) Iron nail
(vi) Paramagnetic
(vii) Direct neutral point

4. Why is the core of an electromagnet made of ferromagnetic material?
5. Where on the surface of the earth is the earth’s magnetic field perpendicular to
the surface of the earth?

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Physics Form 2 Final.indd 121 25/10/2025 10:27