1. The study of magnets and magnetic materials is called
A) Magnetism
B) Electromagnetism
C) Electrostatics
D) Electricity
Answer: A) Magnetism
Explanation: Magnetism is the branch of physics that deals with magnetic forces, fields, and materials.
2. A magnet attracts
A) Iron, cobalt, and nickel
B) Copper and aluminium
C) Silver and gold
D) Wood and plastic
Answer: A) Iron, cobalt, and nickel
Explanation: These are magnetic materials that are strongly attracted to magnets.
3. The substances which are attracted by a magnet are called
A) Magnetic substances
B) Non-magnetic substances
C) Insulators
D) Conductors
Answer: A) Magnetic substances
4. The substances which are not attracted by a magnet are called
A) Non-magnetic substances
B) Magnetic substances
C) Conductors
D) Ferromagnetic substances
Answer: A) Non-magnetic substances
5. The two poles of a magnet are
A) North and South
B) East and West
C) Top and Bottom
D) Positive and Negative
Answer: A) North and South
6. Like poles of a magnet
A) Repel each other
B) Attract each other
C) Neutralize each other
D) Combine
Answer: A) Repel each other
7. Unlike poles of a magnet
A) Attract each other
B) Repel each other
C) Become neutral
D) Lose magnetism
Answer: A) Attract each other
8. When a bar magnet is freely suspended, it always points
A) North–South direction
B) East–West direction
C) Random direction
D) Toward Earth’s center
Answer: A) North–South direction
Explanation: Because of Earth’s magnetic field, one pole points north and the other south.
9. The end of a magnet pointing towards the north is called
A) North pole
B) South pole
C) Magnetic center
D) Axis
Answer: A) North pole
10. The end pointing toward the south is called
A) South pole
B) North pole
C) Magnetic axis
D) Magnetic center
Answer: A) South pole
11. The line joining the poles of a magnet is called
A) Magnetic axis
B) Magnetic meridian
C) Magnetic field
D) Dip line
Answer: A) Magnetic axis
12. The imaginary line joining Earth’s magnetic poles is called
A) Magnetic axis of Earth
B) Equator
C) Rotational axis
D) Magnetic equator
Answer: A) Magnetic axis of Earth
13. The region around a magnet in which its influence can be felt is called
A) Magnetic field
B) Magnetic pole
C) Electric field
D) Axis
Answer: A) Magnetic field
14. Magnetic field lines always emerge from
A) North pole and enter South pole
B) South pole and enter North pole
C) Center of magnet
D) Randomly
Answer: A) North pole and enter South pole
15. The magnetic field lines never
A) Intersect
B) Bend
C) Spread
D) End
Answer: A) Intersect
Explanation: Because the direction of field at a point is unique.
16. The region where magnetic force is strongest is
A) Near poles
B) Middle of magnet
C) Outside magnet
D) Everywhere equal
Answer: A) Near poles
17. The Earth behaves like a
A) Giant magnet
B) Metal sphere
C) Conductor
D) Battery
Answer: A) Giant magnet
18. The imaginary line along which a compass needle aligns is called
A) Magnetic meridian
B) Geographic meridian
C) Equator
D) Parallel
Answer: A) Magnetic meridian
19. The angle between magnetic meridian and geographic meridian is
A) Magnetic declination
B) Dip
C) Latitude
D) Longitude
Answer: A) Magnetic declination
20. The angle made by a freely suspended magnet with the horizontal is called
A) Angle of dip
B) Declination
C) Latitude
D) Inclination
Answer: A) Angle of dip
21. The instrument used to detect the direction of magnetic field is
A) Compass needle
B) Voltmeter
C) Barometer
D) Electroscope
Answer: A) Compass needle
22. Magnetic field lines are crowded where
A) The field is strong
B) Field is weak
C) Poles are far apart
D) There is no magnetism
Answer: A) The field is strong
23. The magnetic field inside a magnet goes from
A) South to North
B) North to South
C) East to West
D) Randomly
Answer: A) South to North
24. A freely suspended magnet rests in
A) Magnetic meridian
B) Vertical plane
C) Horizontal plane
D) Random plane
Answer: A) Magnetic meridian
25. The magnetism of Earth is due to
A) Circulating currents in molten iron core
B) Rotation of Earth only
C) Gravitational force
D) Tides
Answer: A) Circulating currents in molten iron core
26. The north pole of Earth’s magnetic field is located near
A) Geographic south pole
B) Geographic north pole
C) Equator
D) Core
Answer: A) Geographic south pole
27. The south pole of Earth’s magnetic field is near
A) Geographic north pole
B) Geographic south pole
C) Equator
D) Tropic of Cancer
Answer: A) Geographic north pole
28. When a bar magnet is broken into two equal parts
A) Each part becomes a magnet
B) Only one part remains magnetic
C) Magnetism disappears
D) Poles are lost
Answer: A) Each part becomes a magnet
29. The point where the magnetic force appears to be concentrated is called
A) Pole
B) Axis
C) Field line
D) Meridian
Answer: A) Pole
30. The space around a magnet where its influence can be felt is
A) Magnetic field
B) Electric field
C) Gravitational field
D) Thermal field
Answer: A) Magnetic field
31. Magnetic materials are those which
A) Are attracted by magnets
B) Repel magnets
C) Have no poles
D) Produce sound
Answer: A) Are attracted by magnets
32. Example of non-magnetic materials is
A) Wood and copper
B) Iron and cobalt
C) Nickel and steel
D) Iron and cobalt
Answer: A) Wood and copper
33. Temporary magnets are
A) Soft iron magnets
B) Steel magnets
C) Natural magnets
D) Compass magnets
Answer: A) Soft iron magnets
34. Permanent magnets are made from
A) Steel
B) Soft iron
C) Aluminium
D) Copper
Answer: A) Steel
35. A freely suspended magnetic needle aligns itself
A) Along the north–south direction
B) East–west
C) Randomly
D) Vertically
Answer: A) Along the north–south direction
36. The natural magnets are made of
A) Lodestone
B) Steel
C) Iron
D) Copper
Answer: A) Lodestone
37. Lodestone is another name for
A) Magnetite
B) Hematite
C) Graphite
D) Quartz
Answer: A) Magnetite
38. Artificial magnets are made from
A) Steel or iron
B) Plastic
C) Paper
D) Wood
Answer: A) Steel or iron
39. The strength of a magnet is maximum
A) At its poles
B) At its center
C) Everywhere equal
D) None
Answer: A) At its poles
40. A magnetic needle placed at Earth’s magnetic equator stays
A) Horizontal
B) Vertical
C) Inclined
D) At random angle
Answer: A) Horizontal
41. A magnetic needle at the poles of the Earth will be
A) Vertical
B) Horizontal
C) Inclined
D) Flat
Answer: A) Vertical
42. The direction of magnetic field at a point is given by
A) The tangent to the magnetic field line
B) The length of field line
C) The distance between poles
D) The strength of pole
Answer: A) The tangent to the magnetic field line
43. Magnetic field lines never start or end in space because
A) Magnetic monopoles do not exist
B) Field is weak
C) Field lines are imaginary
D) Earth’s field interferes
Answer: A) Magnetic monopoles do not exist
44. Magnetic induction is the process of
A) Magnetizing an object by another magnet
B) Electric charging
C) Heating
D) Cooling
Answer: A) Magnetizing an object by another magnet
45. A magnetic substance loses magnetism when
A) Heated strongly or hammered
B) Cooled
C) Polished
D) Rotated
Answer: A) Heated strongly or hammered
46. Demagnetization means
A) Loss of magnetism
B) Gaining magnetism
C) Attraction of magnets
D) Creation of magnet
Answer: A) Loss of magnetism
47. Magnetism can be destroyed by
A) Heating or hammering
B) Cooling
C) Painting
D) Rubbing
Answer: A) Heating or hammering
48. The process of making a magnet from a magnetic material is called
A) Magnetization
B) Demagnetization
C) Polarization
D) Induction
Answer: A) Magnetization
49. The magnetic field of a bar magnet is strongest
A) Near the poles
B) At the center
C) Between poles
D) Outside field
Answer: A) Near the poles
50. The instrument used to find direction is
A) Magnetic compass
B) Barometer
C) Voltmeter
D) Ammeter
Answer: A) Magnetic compass
51. The magnet used in a compass is a
A) Small bar magnet
B) Electromagnet
C) Temporary magnet
D) Cylindrical magnet
Answer: A) Small bar magnet
Explanation: A compass needle is a small, freely suspended bar magnet that aligns with Earth’s field.
52. The property of a magnet by which it always points north–south direction is called
A) Directive property
B) Attractive property
C) Magnetic moment
D) Polarity
Answer: A) Directive property
53. The property of a magnet to attract magnetic materials is called
A) Attractive property
B) Directive property
C) Permanent property
D) Inductive property
Answer: A) Attractive property
54. The process of making a magnet using electricity is called
A) Electromagnetism
B) Magnetization
C) Induction
D) Static magnetism
Answer: A) Electromagnetism
55. An electromagnet works on the principle of
A) Magnetic effect of electric current
B) Heating effect of current
C) Static electricity
D) Friction
Answer: A) Magnetic effect of electric current
56. The strength of an electromagnet depends on
A) Current and number of turns in the coil
B) Shape of the coil only
C) Color of wire
D) Type of insulation
Answer: A) Current and number of turns in the coil
57. The core material used in electromagnets is
A) Soft iron
B) Steel
C) Copper
D) Aluminium
Answer: A) Soft iron
Explanation: Soft iron magnetizes easily and loses magnetism quickly, suitable for electromagnets.
58. Permanent magnets are made from
A) Hard steel
B) Soft iron
C) Copper
D) Zinc
Answer: A) Hard steel
Explanation: Steel retains magnetism for a long time.
59. The device used to lift heavy iron objects is
A) Electromagnet
B) Bar magnet
C) Horseshoe magnet
D) Compass
Answer: A) Electromagnet
60. Electromagnets are used in
A) Electric bells and cranes
B) Fans and bulbs
C) Heaters
D) Clocks
Answer: A) Electric bells and cranes
61. A magnetic material that is weakly attracted by a magnet is
A) Paramagnetic
B) Diamagnetic
C) Ferromagnetic
D) Non-magnetic
Answer: A) Paramagnetic
62. The materials strongly attracted by magnets are called
A) Ferromagnetic
B) Diamagnetic
C) Non-magnetic
D) Semiconductor
Answer: A) Ferromagnetic
63. The materials weakly repelled by magnets are called
A) Diamagnetic
B) Paramagnetic
C) Ferromagnetic
D) Magnetic
Answer: A) Diamagnetic
64. Example of a ferromagnetic material is
A) Iron
B) Copper
C) Aluminium
D) Glass
Answer: A) Iron
65. Example of a diamagnetic material is
A) Bismuth
B) Iron
C) Nickel
D) Cobalt
Answer: A) Bismuth
66. Example of a paramagnetic material is
A) Aluminium
B) Copper
C) Silver
D) Zinc
Answer: A) Aluminium
67. The region around a current-carrying conductor has
A) Magnetic field
B) Electric charge
C) Heat
D) Pressure
Answer: A) Magnetic field
68. The direction of magnetic field around a straight conductor is given by
A) Right-hand thumb rule
B) Fleming’s left-hand rule
C) Lenz’s law
D) Faraday’s law
Answer: A) Right-hand thumb rule
69. In the right-hand thumb rule, the thumb indicates
A) Current direction
B) Field direction
C) Electron flow
D) Force direction
Answer: A) Current direction
70. The curling fingers in the right-hand rule indicate
A) Magnetic field direction
B) Electric field direction
C) Current direction
D) Electron flow
Answer: A) Magnetic field direction
71. The magnetic field around a current-carrying solenoid is similar to
A) A bar magnet
B) A coil
C) A straight wire
D) A sphere
Answer: A) A bar magnet
Explanation: One end acts as a north pole and the other as a south pole.
72. The device that converts electrical energy into mechanical energy using magnetism is
A) Electric motor
B) Generator
C) Transformer
D) Cell
Answer: A) Electric motor
73. The device that converts mechanical energy into electrical energy using magnetism is
A) Generator
B) Motor
C) Battery
D) Transformer
Answer: A) Generator
74. The magnetic effect produced by current was discovered by
A) Hans Christian Oersted
B) Michael Faraday
C) Ampere
D) Maxwell
Answer: A) Hans Christian Oersted
75. The Earth’s magnetic field helps in
A) Navigation using compass
B) Lighting
C) Heating
D) Power generation
Answer: A) Navigation using compass
76. The magnetic field of Earth is caused by
A) Motion of molten iron in Earth’s core
B) The sun’s heat
C) Atmospheric pressure
D) Moon’s gravity
Answer: A) Motion of molten iron in Earth’s core
77. The strength of Earth’s magnetic field is greatest at
A) Poles
B) Equator
C) Center
D) Tropic
Answer: A) Poles
78. The strength of Earth’s magnetic field is least at
A) Equator
B) Poles
C) Core
D) Tropics
Answer: A) Equator
79. The north pole of a magnet is attracted toward
A) Earth’s magnetic south pole (near geographic north)
B) Earth’s magnetic north pole
C) Geographic south
D) Magnetic equator
Answer: A) Earth’s magnetic south pole (near geographic north)
80. A freely suspended magnet aligns itself
A) Along Earth’s magnetic field
B) Along Earth’s axis
C) Randomly
D) Vertically
Answer: A) Along Earth’s magnetic field
81. The angle made by magnetic field lines with the horizontal is called
A) Angle of dip
B) Declination
C) Inclination
D) Latitude
Answer: A) Angle of dip
82. The angle between magnetic north and true north is
A) Magnetic declination
B) Dip
C) Latitude
D) Altitude
Answer: A) Magnetic declination
83. The total magnetic field of Earth is called
A) Magnetic intensity
B) Magnetic moment
C) Magnetic element
D) Earth’s magnetism
Answer: D) Earth’s magnetism
84. A freely suspended magnetic needle at poles will stand
A) Vertically
B) Horizontally
C) Inclined
D) Random
Answer: A) Vertically
85. Magnetic materials lose their magnetism when
A) Heated above Curie temperature
B) Cooled
C) Kept in magnetic field
D) Placed in air
Answer: A) Heated above Curie temperature
86. The phenomenon of a magnetic needle deflecting near a current-carrying wire shows
A) Current produces a magnetic field
B) Heat is produced
C) Electricity stops
D) No effect
Answer: A) Current produces a magnetic field
87. Magnetic field strength decreases when
A) Distance from magnet increases
B) Magnet is strong
C) Magnet is new
D) Distance is small
Answer: A) Distance from magnet increases
88. The unit of magnetic field strength is
A) Tesla
B) Newton
C) Watt
D) Ampere
Answer: A) Tesla
89. A solenoid carrying current behaves as
A) A bar magnet
B) Conductor
C) Insulator
D) Resistor
Answer: A) A bar magnet
90. The polarity of an electromagnet can be changed by
A) Reversing current direction
B) Increasing resistance
C) Changing core
D) Cooling
Answer: A) Reversing current direction
91. The strength of an electromagnet can be increased by
A) Increasing current or number of turns
B) Using copper core
C) Decreasing current
D) Cooling
Answer: A) Increasing current or number of turns
92. The principle of an electric bell is
A) Magnetic effect of current
B) Heating effect
C) Light effect
D) Chemical effect
Answer: A) Magnetic effect of current
93. The part of an electric bell that acts as an electromagnet is
A) Coil with soft iron core
B) Hammer
C) Gong
D) Switch
Answer: A) Coil with soft iron core
94. The pointer in an electric meter deflects due to
A) Magnetic effect of current
B) Heating
C) Voltage
D) Friction
Answer: A) Magnetic effect of current
95. Magnetic substances used in compasses are
A) Steel or hard iron
B) Aluminium
C) Plastic
D) Brass
Answer: A) Steel or hard iron
96. The lines of force around a straight current-carrying wire are
A) Concentric circles
B) Straight lines
C) Parallel lines
D) Random
Answer: A) Concentric circles
97. The magnetic field around a solenoid resembles that of
A) A bar magnet
B) A coil
C) A sphere
D) A line
Answer: A) A bar magnet
98. The magnetic field of a bar magnet can be represented by
A) Closed continuous lines
B) Straight lines
C) Dotted points
D) Broken lines
Answer: A) Closed continuous lines
99. The magnets used in loudspeakers are
A) Permanent magnets
B) Temporary magnets
C) Natural magnets
D) Artificial magnets
Answer: A) Permanent magnets
100. The magnets used in electric cranes are
A) Electromagnets
B) Permanent magnets
C) Natural magnets
D) Steel bars
Answer: A) Electromagnets
Explanation: Electromagnets are strong and can be switched on or off as needed.