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Question-1
Which layer of the earth is responsible for its magnetism?
(A)
Core
(B)
Mantle
(C)
Crust
(D)
All of the above
Question-2
The glass container in which the reeds in a reed switch is enclosed is filled with:
(A)
Water
(B)
Inert gas
(C)
Oxygen
(D)
Hydrogen
Question-3
In which direction does a bar magnet align itself, when suspended from a thread?
(A)
North south
(B)
East west
(C)
North east
(D)
South east
Question-4
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-5
Groups of particles from which a magnetic material is made form tiny regions called:
(A)
Domain
(B)
Reed
(C)
Relay
(D)
Holes
Question-6
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-7
Who developed electric motor?
(A)
Petrus de Peregrinus
(B)
William Gilbert
(C)
Oestered
(D)
Joseph Henry
Question-8
Which of the following can let the force of magnetism pass through it?
(A)
Paper
(B)
Water
(C)
Steel
(D)
Both 1 & 2
Question-9
Which of the following used in ancient China to identify the ideal place of burial, led to the development of compass?
(A)
Haematite
(B)
Lode stone
(C)
Magnetite
(D)
Silica
Question-10
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
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Cambridge Secondary Grade 8
IGCSE
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