Magnetism and electromagnetism

Magnet properties, fields from currents, the motor effect, Fleming’s left-hand rule and the turning effect on a coil.

Learning goals

State the properties of magnets
Describe induced magnetism
Distinguish temporary and permanent magnets
Determine magnetic-field direction with a compass or bar magnet
Interpret bar-magnet field patterns
Draw the magnetic field pattern around a bar magnet and between the poles of two bar magnets
Interpret the field pattern around a straight current-carrying wire
Draw the magnetic field pattern around a straight current-carrying wire
Interpret the field pattern around a current-carrying solenoid
Draw the magnetic field pattern around a current-carrying solenoid
Relate current magnitude and direction to magnetic field
Describe experiments showing the force on a current-carrying conductor in a magnetic field
Predict force reversal when current or field reverses
Use Fleming’s left-hand rule
Explain the turning effect on a current-carrying coil

G3 Science (Physics) · Topic 15

Begin with the complete topic lesson. Then try a short check, use the feedback to review one idea and come back later for another attempt.

Magnet properties, fields from currents, the motor effect, Fleming’s left-hand rule and the turning effect on a coil.

Check the required topic capabilities and get focused practice for ideas that need another look.

Repulsion is the sure test for a magnet because an unmagnetised magnetic material can also be attracted.
A compass's north-seeking end shows magnetic-field direction; outside a bar magnet, field lines run north to south.
Use the right-hand grip rule for fields around a straight wire and inside a solenoid.
Use Fleming's left-hand rule with conventional current to relate field, current and force directions.
Opposite forces on the two active sides of a current-carrying coil form a turning effect.

Magnetism and electromagnetism is Topic 15 in K326 / K327 Physics component · 2027.

The lesson and questions stay at the depth required for this course.

Reviewed 9 Aug 2026

Course and syllabus information