IGCSE Cambridge Secondary Grade 8 Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in


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Question-1 Who believed that the magnet pointed to the outer sphere of the heavens?

(A) Petrus de Peregrinus	(B)William Gilbert
(C)Oestered	(D)Joseph Henry

Question-2 Which layer of the earth is responsible for its magnetism?

(A) Core	(B)Mantle
(C)Crust	(D)All of the above

Question-3 When a material that can show magnetic properties such as a steel paper clip is attracted to the end of a magnet, it also becomes a magnet by a process called:

(A) Magnetic induction	(B)Thermal induction
(C)Solar magnetism	(D)Metallic induction

Question-4 A magnet whose magnetism can be switched on and off by switching a current on and off.

(A) Electromagnet	(B)Electro coil
(C)Magnetic coil	(D)Induction coil

Question-5 The region around a magnet in which the pull of the magnetic force acts on magnetic materials is called the:

(A) Magnetic field	(B)Magnetic plexus
(C)Magnetic domain	(D)Magnetic territory

Question-6 Who described the earth as behaving as if it contained a huge magnet?

(A) Petrus de Peregrinus	(B)William Gilbert
(C)Oestered	(D)Joseph Henry

Question-7 If you bring a steel paper clip which is not magnetized towards either pole of a magnet:

(A) You will feel the pull of the magnetic force becomes stronger as the paper clip gets closer to the pole	(B)You will feel the pull of the magnetic force becomes weaker as the paper clip gets closer to the pole
(C)you will feel the pull of the magnetic force becomes stronger as the paper clip gets away from the pole	(D)You will feel the pull of the magnetic force becomes weaker as the paper clip gets away from the pole

Question-8 Which of the following is a part of an electrical device which moves when a magnetic force of the electromagnet pulls on a piece of iron?

(A) Armature	(B)Electromagnetic relay
(C)Domain	(D)Reed relay

Question-9 The black stone found in the ancient country of magnesia, which had the power to draw pieces of iron to them became known as:

(A) Lode stone	(B)Magnacal
(C)Red stone	(D)Blood stone

Question-10 The reeds in a reed switch are made of:

(A) Soft iron	(B)Pig iron
(C)Magnetite	(D)Alnico

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Cambridge Secondary Grade 8

IGCSE

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