Integrated Science Current WASSCE Past Questions: MAGNETISM Objective Questions (2011-2018)
I) Questions that occur multiple times means they were repeated over the period under consideration
II) Candidates are expected to spend 50 seconds on each objective question. Candidates are therefore required to spend between 8-9minutes on these 10 questions. Start work now!!
1. A soft magnet is the type which
A. maintains it’s magnetism permanently
B. Can be demagnetize with ease
C. can easily be cut into smaller pieces
D. attract other magnetic materials
2. The reason for using keepers to store magnets is to
A. Increase the strength of the magnet
B. Cancel the effect of the earth’s magnetism
C. Protect the magnet when they fall
D. Reduce self-demagnetism
See also: Int. Sci. WAEC Questions: Intro. To Sci. Obj. (Q1-10)
3. Which of the following methods could be used to demagnetize a strong magnet
A. Leaving it in water for few days
B. Heating it to red hot
C. Placing it in a deep freezer overnight
D. Putting it in a solenoid with a direct current
4. The strength of electromagnet can be increased by
I. Increasing the current flowing through it
II. Using a coil with more turns of wire
III. Putting a soft iron core through the center of the coil
IV. Using keepers
A. I and III
B. III and IV
C. I, II and III only
D. II, III and IV only
5. Magnets are found in
I. Electric generator
II. Loudspeaker
III. microphone
A. I and II
B. I and III only
C. II and III only
D. I, II and III
6. Which of the following methods is/are used in making magnets
I. Single touch
II. Double touch
III. Electrical
A. I only
B. I and III only
C. II and III only
D. I, II and III
See also: Forms of Energy Obj (Q1-10): Int. Sci. Current WAEC Questions
7. Which of the following methods can be used to produce magnets
I. Direct current
II. Alternating current
III. Striking
A. I only
B. II only
C. I and III only
D. I, II and III
18. When a soft iron is attracted to a strong magnet, it becomes
A. a permanent magnet
B. a temporal magnet
C. an electromagnet
D. a transistor
See also ELECTRONICS Obj (Q1-10): Int. Sci. Current WAEC Questions
19. One way of making magnetic field stronger in a solenoid is to
A. increase the number of turns of wire
B. decrease the current in the solenoid
C. ensure the field lines are far apart
D. Change the direction of the magnetic field lines
20. A bar magnet was moved towards a metal and the metal was attracted. It can be concluded that the metal is
I. a magnet
II. not a magnet
III. a magnetic material
A. I only
B. II only
C. III only
D. I and II only
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Answers
1. B
2. D
3. B
4. C
5. D
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6. D
7. C
8. B
9. A
10. D
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