1 Which property of a magnet causes it to attract iron? A Electric charge B Magnetic field C Gravity D Friction
2 Which are the two ends of a magnet called? A Electric poles B Positive and negative ends C Magnetic poles D Charged ends
4 Unlike magnetic poles will: A Repel each other B Have no effect C Attract each other D Destroy each other
7 Magnetism produced in an unmagnetized material is called: A Permanent magnetism B Residual magnetism C Induced magnetism D Electric magnetism
8 Which magnet loses its magnetism easily? A Permanent magnet B Temporary magnet C Bar magnet D Earth magnet
9 Steel is commonly used to make permanent magnets because it: A Is cheap B Has high retentivity C Is soft D Conducts electricity
11 The region around a magnet where magnetic force is felt is called: A Electric field B Magnetic zone C Magnetic field D Force area
12 Magnetic field lines always emerge from: A South pole B Center of magnet C North pole D All sides equally
14 Magnetic field lines never: A Intersect each other B Form closed loops C Exist outside magnet D Exist inside magnet
15 The closeness of magnetic field lines indicates: A Direction of field B Strength of field C Type of magnet D Mass of magnet
16 Which device is used to detect the direction of magnetic field? A Ammeter B Voltmeter C Compass D Thermometer
17 Iron filings are used to: A Measure magnetic field B Plot magnetic field lines C Increase magnetism D Destroy magnet
18 The magnetic field inside a magnet is directed from: A North to South B South to North C East to West D West to East
19 Which of the following is a use of permanent magnets? A Electric bell B Transformer C Loudspeaker D Electromagnetic crane
20 An electromagnet works on the principle of: A Static electricity B Chemical reaction C Magnetic effect of current D Electrolysis
21 The strength of an electromagnet can be increased by: A Reducing current B Increasing number of turns C Using plastic core D Reducing turns
22 Which magnet can be switched ON and OFF? A Bar magnet B Permanent magnet C Electromagnet D Natural magnet
23 Domain theory explains magnetism due to: A Electric charges B Alignment of domains C Gravity D Heat energy
24 In an unmagnetized material, magnetic domains are: A Randomly oriented B Fully aligned C Absent D Very large
25 Ferromagnetic materials are: A Strongly attracted by magnets B Weakly attracted C Weakly repelled D Not affected
27 Paramagnetic materials are: A Strongly repelled B Strongly attracted C Weakly attracted D Not affected
28 Diamagnetic materials are: A Strongly attracted B Weakly attracted C Weakly repelled D Strongly magnetized
31 The direction of Earth’s magnetic field is from: A Geographic North to South B Geographic South to North C East to West D West to East
32 A compass needle aligns itself along: A Electric field B Earth’s magnetic field C Gravitational field D Solar radiation
33 Which application uses magnetism in data storage? A LCD screen B Hard disk C Calculator D Solar panel
34 Magnetic shielding is used to: A Increase magnetic field B Reduce unwanted magnetic fields C Create electricity D Store data