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Cambridge IGCSE
Physics
Revision Guide 2024
Unit 4 Part 2 Magnetism
Mohammed Ali
[Physics with Mo Ali]
Cambridge IGCSE Physics Revision Guide by Mo Ali – Unit 4 – Part 2
, 2
Simple Magnetism
1 Describe the forces between magnetic poles and between magnets and magnetic materials, including the use of the
terms north pole (N pole), south pole (S pole), attraction and repulsion, magnetised and unmagnetised
2 Describe induced magnetism
3 State the differences between the properties of temporary magnets (made of soft iron) and the properties of
permanent magnets (made of steel)
4 State the difference between magnetic and non-magnetic materials
5 Describe a magnetic field as a region in which a magnetic pole experiences a force
6 Draw the pattern and direction of magnetic field lines around a bar magnet
7 State that the direction of a magnetic field at a point is the direction of the force on the N pole of a magnet at that
point
8 Describe the plotting of magnetic field lines with a compass or iron filings and the use of a compass to determine the
direction of the magnetic field
9 Describe the uses of permanent magnets and electromagnets
10 Explain that magnetic forces are due to interactions between magnetic fields
11 Know that the relative strength of a magnetic field is represented by the spacing of the magnetic field lines
12 Describe the pattern and direction of the magnetic field due to currents in straight wires and in solenoids
13 Describe an experiment to identify the pattern of the magnetic field (including direction) due to currents in straight
wires and in solenoids
14 Describe how the magnetic effect of a current is used in relays and loudspeakers and give examples of their
application
15 State the qualitative variation of the strength of the magnetic field around straight wires and solenoids
16 Describe the effect on the magnetic field around straight wires and solenoids of changing the magnitude and
direction of the current
Magnetic Forces
Like poles repel.
Opposite poles attract.
Iron and Steel (Ferromagnetic Materials) are attracted to magnets.
Induced Magnetism
Definition: The process where an unmagnetised object becomes magnetic when inside a magnetic field
Iron is easy to magnetize and demagnetize (soft). Temporary.
Steel is difficult to magnetize and demagnetize (hard). Permanent.
Cambridge IGCSE Physics Revision Guide by Mo Ali – Unit 4 – Part 2
Cambridge IGCSE
Physics
Revision Guide 2024
Unit 4 Part 2 Magnetism
Mohammed Ali
[Physics with Mo Ali]
Cambridge IGCSE Physics Revision Guide by Mo Ali – Unit 4 – Part 2
, 2
Simple Magnetism
1 Describe the forces between magnetic poles and between magnets and magnetic materials, including the use of the
terms north pole (N pole), south pole (S pole), attraction and repulsion, magnetised and unmagnetised
2 Describe induced magnetism
3 State the differences between the properties of temporary magnets (made of soft iron) and the properties of
permanent magnets (made of steel)
4 State the difference between magnetic and non-magnetic materials
5 Describe a magnetic field as a region in which a magnetic pole experiences a force
6 Draw the pattern and direction of magnetic field lines around a bar magnet
7 State that the direction of a magnetic field at a point is the direction of the force on the N pole of a magnet at that
point
8 Describe the plotting of magnetic field lines with a compass or iron filings and the use of a compass to determine the
direction of the magnetic field
9 Describe the uses of permanent magnets and electromagnets
10 Explain that magnetic forces are due to interactions between magnetic fields
11 Know that the relative strength of a magnetic field is represented by the spacing of the magnetic field lines
12 Describe the pattern and direction of the magnetic field due to currents in straight wires and in solenoids
13 Describe an experiment to identify the pattern of the magnetic field (including direction) due to currents in straight
wires and in solenoids
14 Describe how the magnetic effect of a current is used in relays and loudspeakers and give examples of their
application
15 State the qualitative variation of the strength of the magnetic field around straight wires and solenoids
16 Describe the effect on the magnetic field around straight wires and solenoids of changing the magnitude and
direction of the current
Magnetic Forces
Like poles repel.
Opposite poles attract.
Iron and Steel (Ferromagnetic Materials) are attracted to magnets.
Induced Magnetism
Definition: The process where an unmagnetised object becomes magnetic when inside a magnetic field
Iron is easy to magnetize and demagnetize (soft). Temporary.
Steel is difficult to magnetize and demagnetize (hard). Permanent.
Cambridge IGCSE Physics Revision Guide by Mo Ali – Unit 4 – Part 2
