Magnetism: Interactive Learning Quizzes for Sixth Form Physics

Question 1

Identify the material that is not magnetic:

Accepted Answer

Plastic

Answer

Iron

Answer

Nickel

Answer

Cobalt

Question 2

Which of the following is NOT a characteristic of magnetic materials?

Accepted Answer

Electrical conductivity

Answer

Permeability

Answer

Remanence

Answer

Magnetic susceptibility

Question 3

The force experienced by a current-carrying wire placed in a magnetic field is due to:

Accepted Answer

Interaction between the moving electrons in the wire and the magnetic field

Answer

Interaction between the stationary electrons in the wire and the magnetic field

Answer

Induced magnetic field created by the current

Answer

Electric field generated by the current

Question 4

The primary cause of the Earth's magnetic field is:

Accepted Answer

Convection currents within the Earth's core

Answer

Rotation of the Earth

Answer

Solar radiation

Answer

Tidal forces

Question 5

Which of the following materials is NOT ferromagnetic?

Accepted Answer

Aluminum

Answer

Iron

Answer

Steel

Answer

Nickel

Question 6

What is the SI unit of magnetic flux density?

Accepted Answer

Tesla

Answer

Weber

Answer

Ampere

Answer

Volt

Question 7

What is the direction of the magnetic force on a current-carrying wire in a uniform magnetic field?

Accepted Answer

Perpendicular to both the current and the magnetic field

Answer

Parallel to both the current and the magnetic field

Answer

Antiparallel to both the current and the magnetic field

Answer

Zero

Question 8

The purpose of an iron core in an electromagnet is to:

Accepted Answer

Increase the magnetic flux density

Answer

Decrease the magnetic flux density

Answer

Reverse the direction of the magnetic field

Answer

Shield the electromagnet from external magnetic fields

Question 9

In an inductor, a magnetic core serves to:

Accepted Answer

Increase inductance

Answer

Decrease inductance

Answer

Prevent magnetic saturation

Answer

Reduce eddy currents

Question 10

How are magnetic field strength and magnetic flux density related?

Accepted Answer

Directly proportional

Answer

Inversely proportional

Answer

Independent

Answer

Equal in magnitude

Question 11

What differentiates a permanent magnet from an electromagnet?

Accepted Answer

Permanent magnets retain magnetism without current, while electromagnets require current for a magnetic field.

Answer

Electromagnets retain magnetism without current, while permanent magnets require current for a magnetic field.

Answer

Permanent magnets are stronger than electromagnets.

Answer

Electromagnets are stronger than permanent magnets.

Question 12

The operation of a transformer is based on the principle of:

Accepted Answer

Electromagnetic induction

Answer

Magnetic resonance

Answer

Electrical conduction

Answer

Thermal expansion

Question 13

In the International System of Units (SI), which unit is utilized to measure magnetic field strength?

Accepted Answer

Tesla

Answer

Weber

Answer

Ampere

Answer

Farad

Question 14

Which rule is applied to determine the direction of the force acting on a current-carrying wire situated in a magnetic field?

Accepted Answer

Right-hand rule

Answer

Left-hand rule

Answer

Fleming's left-hand rule

Answer

Ampere's rule

Question 15

Which of the following accurately describes the behavior of a ferromagnetic material?

Accepted Answer

Retains magnetism even after the removal of the magnetic field

Answer

Loses magnetism immediately upon the removal of the magnetic field

Answer

Only becomes magnetized in the presence of a strong magnetic field

Answer

Has no magnetic properties

Question 16

What is the geometric shape of the magnetic field lines surrounding a current-carrying wire?

Accepted Answer

Circles

Answer

Straight lines

Answer

Ellipses

Answer

Hyperbolas

Question 17

What is the primary function of a magnetic domain?

Accepted Answer

To align the magnetic moments of atoms within a material

Answer

To reduce the overall magnetization of a material

Answer

To increase the overall magnetization of a material

Answer

To cancel out the magnetic field inside a material

Question 18

What is the mathematical relationship between the magnetic field and the current density in a material?

Accepted Answer

Directly proportional

Answer

Inversely proportional

Answer

Logarithmically proportional

Answer

No relationship

Question 19

Which type of material exhibits both paramagnetic and ferromagnetic properties?

Accepted Answer

Ferrimagnetic

Answer

Diamagnetic

Answer

Paramagnetic

Answer

Ferromagnetic

Question 20

The SI unit of magnetic field strength is the:

Accepted Answer

Tesla

Answer

Gauss

Answer

Weber

Answer

Ampere

Question 21

A current-carrying loop can be used to create a:

Accepted Answer

Magnetic field

Answer

Electric field

Answer

Gravitational field

Answer

Electromagnetic field

Question 22

What is the direction of the magnetic force acting on a positively charged particle moving perpendicular to a magnetic field?

Accepted Answer

Perpendicular to both the magnetic field and the particle's velocity

Answer

In the direction of the magnetic field

Answer

Opposite to the direction of the magnetic field

Answer

Parallel to both the magnetic field and the particle's velocity

Question 23

Which of the following is a characteristic of diamagnetic materials?

Accepted Answer

They have a negative magnetic susceptibility

Answer

They have a positive magnetic susceptibility

Answer

They are strongly attracted to magnets

Answer

They exhibit hysteresis

Question 24

Which of the following is NOT a method to demagnetise a material?

Accepted Answer

Leaving the material in a strong magnetic field

Answer

Heating the material above its Curie temperature

Answer

Hammering the material

Answer

Exposing the material to an alternating magnetic field

Question 25

Which factor does NOT influence the strength of an electromagnet?

Accepted Answer

Coil length

Answer

Number of turns in the coil

Answer

Presence of an iron core

Answer

Current strength

Question 26

When a current-carrying conductor is placed in a magnetic field, what is the direction of the force experienced by the conductor?

Accepted Answer

At an angle to the field

Answer

Parallel to the field

Answer

Perpendicular to the field

Answer

Opposite to the field

Question 27

Which material exhibits ferromagnetic properties?

Accepted Answer

Iron

Answer

Aluminum

Answer

Copper

Answer

Plastic

Question 28

The magnetic field lines around a current-carrying wire form a pattern of:

Accepted Answer

Concentric circles

Answer

Parallel lines

Answer

Expanding spirals

Answer

Cones

Question 29

What unit is used to measure magnetic flux density?

Accepted Answer

Tesla

Answer

Weber

Answer

Ampere

Answer

Volt

Question 30

How is the magnetic field strength in a coil related to the current flowing through it?

Accepted Answer

Linearly proportional

Answer

Inversely proportional

Answer

Square root proportional

Answer

No relationship

Question 31

What distinguishes diamagnetism from paramagnetism?

Accepted Answer

Diamagnetic materials are repelled by magnets, while paramagnetic materials are attracted to magnets.

Answer

Diamagnetism is induced magnetism, while paramagnetism is permanent magnetism.

Answer

Diamagnetism is permanent magnetism, while paramagnetism is induced magnetism.

Answer

Paramagnetic materials are repelled by magnets, while diamagnetic materials are attracted to magnets.

Question 32

What is the magnetic field strength at the center of a circular loop of radius R carrying a current I?

Accepted Answer

μ₀I/4R

Answer

μ₀I/2R

Answer

μ₀I/R

Answer

2μ₀I/R

Question 33

Which of the following statements describes the relationship between magnetic fields and electric charges?

Accepted Answer

Magnetic fields are created by the movement of electric charges.

Answer

Magnetic fields exist only around permanent magnets.

Answer

Magnetic field lines never intersect.

Answer

The direction of a magnetic field line indicates the direction of the magnetic force on a negative charge moving in that direction.

Question 34

When a magnet is placed near a piece of iron, the iron becomes magnetized because

Accepted Answer

The magnetic domains in the iron align with the magnetic field of the magnet.

Answer

The iron atoms gain electrons from the magnet.

Answer

The iron atoms lose electrons to the magnet.

Answer

The iron atoms become charged by the magnetic field of the magnet.

Question 35

An electric motor converts

Accepted Answer

Electrical energy into mechanical energy.

Answer

Mechanical energy into electrical energy.

Answer

Magnetic energy into electrical energy.

Answer

Electrical energy into magnetic energy.

Question 36

Which of the following is NOT a unit of magnetic field strength?

Accepted Answer

Ampere.

Answer

Tesla.

Answer

Gauss.

Answer

Weber per square meter.

Question 37

A magnetic material that can be easily magnetized and demagnetized is called a

Accepted Answer

Paramagnetic material.

Answer

Ferromagnetic material.

Answer

Diamagnetic material.

Answer

Antiferromagnetic material.

Question 38

The magnetic flux through a surface is defined as

Accepted Answer

The product of the magnetic field strength and the area of the surface perpendicular to the field.

Answer

The number of magnetic field lines passing through the surface.

Answer

The strength of the magnetic field at the surface.

Answer

The angle between the magnetic field and the surface.

Question 39

Which of the following is NOT a characteristic of magnetic materials?

Accepted Answer

They repel all metals.

Answer

They consist of magnetic domains.

Answer

They can be magnetized and demagnetized.

Answer

They can induce magnetic fields in their surroundings.

Question 40

The strength of the magnetic field at a given point due to a current-carrying wire is directly proportional to:

Accepted Answer

Current flowing through the wire

Answer

Distance from the wire

Answer

Length of the wire

Answer

Material of the wire

Question 41

When two magnets are placed near each other, their magnetic fields:

Accepted Answer

Interact, leading to attraction or repulsion.

Answer

Remain independent of one another.

Answer

Generate a new magnetic field stronger than either original field.

Answer

Cancel each other out.

Question 42

The SI unit for magnetic field intensity is the:

Accepted Answer

Tesla (T)

Answer

Gauss (G)

Answer

Ampere (A)

Question 43

The magnetic force between two current-carrying wires is:

Accepted Answer

Proportional to the product of the currents in the wires.

Answer

Proportional to the sum of the currents in the wires.

Answer

Independent of the currents in the wires.

Question 44

Which of the following is NOT a type of magnetic material?

Accepted Answer

Ferroelectric

Answer

Paramagnetic

Answer

Antiferromagnetic

Answer

Ferromagnetic

Question 45

The magnetic field inside a long solenoid is:

Accepted Answer

Uniform

Answer

Strongest at the ends

Answer

Non-uniform

Answer

Zero

Question 46

Which of the following is NOT a fundamental property of a magnet?

Accepted Answer

It can attract only metallic materials.

Answer

It can be used to generate electricity.

Answer

It has two poles, north and south.

Answer

It can be repelled by another magnet.

Question 47

The magnetic field created around a current-carrying wire is

Accepted Answer

Circular

Answer

Linear

Answer

Radial

Answer

Elliptical

Question 48

The force between two magnets can be

Accepted Answer

Attractive or repulsive

Answer

Only attractive

Answer

Neither attractive nor repulsive

Answer

Only repulsive

Question 49

The magnetic moment of a current loop is

Accepted Answer

Proportional to both the current and the area of the loop

Answer

Proportional to the current only

Answer

Proportional to the area of the loop only

Question 50

The magnetic field of Earth can be best approximated by a

Accepted Answer

Dipole

Answer

Quadrupole

Answer

Uniform field

Answer

Hexapole

Question 51

Which unit is used to measure magnetic flux?

Accepted Answer

Weber (Wb)

Answer

Tesla (T)

Answer

Volt (V)

Answer

Ampere (A)

Question 52

The magnetic susceptibility of a material describes its

Accepted Answer

Responsiveness to external magnetic fields

Answer

Polarity

Answer

Strength of its magnetic field

Answer

Electrical conductivity

Question 53

Which of the following is NOT a type of magnetic material?

Accepted Answer

Semiconductor

Answer

Paramagnetic

Answer

Ferromagnetic

Answer

Diamagnetic