CIE iGCSE Co-Ordinated Science P4.1 Simple phenomena of magnetism Exam Style Questions Paper 1
Question
Which type of magnet can be switched on and off many times per second?
(A) an electromagnet only
(B) a permanent magnet only
(C) both electromagnets and permanent magnets
(D) neither electromagnets or permanent magnets
▶️Answer/Explanation
Ans: A
Question
Which type of magnet can be switched on and off many times per second?
(A) an electromagnet only
(B) a permanent magnet only
(C) both electromagnets and permanent magnets
(D) neither electromagnets or permanent magnets
▶️Answer/Explanation
Ans: A
Question
Which diagram shows the pattern and direction of the magnetic field near the S pole of a bar magnet?
▶️Answer/Explanation
Ans : C
Question
A bar magnet is brought near to a metal rod. The metal rod is attracted to the magnet.
The magnet is then turned around so that the N-pole is on the right.
The magnet is again brought near to the metal rod and is again attracted to the magnet.
What could the metal rod be?
(A) another bar magnet
(B) a piece of aluminium
(C) a piece of copper
(D) a piece of iron
▶️Answer/Explanation
Ans: D
Question
Three charged balls P, Q and R are suspended by insulating threads. Ball P is negatively charged.
Ball Q is brought close to ball P. The balls move away from each other.
Ball Q is now brought close to ball R. The balls move closer to each other.
What are the signs of the charges on ball Q and ball R?
▶️Answer/Explanation
Ans : B
Question
What is meant by an electric field?
A. a region in which a charge experiences a force
B. a region in which a current experiences a force
C. a region in which a magnetic pole experiences a force
D. a region in which a mass experiences a force
▶️Answer/Explanation
Answer: A
Explanation: An electric field is a region around a charged particle where another charge experiences a force. Therefore, the correct answer is A.
Question
The diagrams P, Q, R and S show four pairs of bar magnets.
For which two pairs of magnets is there a force of attraction between the magnets?
A) P and Q
B) Q and R
C) R and S
D) P and S
▶️Answer/Explanation
Answer: A) P and Q
Explanation: Magnets attract when opposite poles (north and south) are facing each other. P and Q show this configuration.
Question
A bar of soft iron and a bar of steel are held in contact with a strong magnet.
Both bars become magnetised. The two bars are now moved away from the magnet.
Which statement about the bars is correct?
A. Both bars easily lose their magnetism.
B. Neither of the bars easily loses its magnetism.
C. The soft iron bar easily loses its magnetism but the steel bar retains its magnetism.
D. The steel bar easily loses its magnetism but the soft iron bar retains its magnetism.
▶️Answer/Explanation
Answer: C. The soft iron bar easily loses its magnetism but the steel bar retains its magnetism.
Explanation: Soft iron is a temporary magnet and easily loses its magnetism, while steel is a permanent magnet and retains its magnetism.