Magnets QuizzOnline version Select one or more correct answers by isuru umesha 1 This magnetic field existing near the earth is known as a North and south poles b Neomagnetism c Geomagnetism d Magnetic field 2 Select the correct statement a There is no difference between the real north and the magnetic north of the earth. b There is a little difference between the real north and the magnetic north of the earth. c There is a little difference between the real north and the magnetic south of the earth. d The real north and the magnetic north of the earth are the same 3 an electromagnet is a magnet, ( Select all correct answers) Choose one or more answers a that becomes a magnet, only when electricity is supplied b that becomes a magnet, that produce electricity. c that need supply of electricity to operate properly d that the magnetic power is permanent 4 Magnets, in which magnetic power is retained for a long time, are known as a Bar magnets b Long magnets c Permanent magnets d Temporary magnets 5 Which is used to make permanent magnets Choose one or more answers a Nickel b Ferrite c Steel d Soft iron 6 Select all the methods that can make a temporary magnet Choose one or more answers a Conversion method b Contact method c Electric method d Drop method 7 Magnetic power of permanent magnets are lost due to various reasons. What is not a reason for that? a Ageing b Being subjected to high temperatures c Being subjected to vibrations d Being subjected to wind 8 What are A and B in this picture? a Straps of wood b Bar magnets c Soft iron d Plastic 9 Select all the instances where we use permanent magnets in our day to day life Choose one or more answers a In speakers b In pencil cases c In Electric motors d In dynamo 10 Terminals of a magnet, where magnetic force is concentrated are called a Magnetic fields b Magnetic lines c Geomagnetism d Magnetic poles
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