#89
4.7.2.1 Electromagnetism
Paper 2 · Higher combined
Spec reference: 4.7.2 (subtopic).
What you need to know
- Electromagnetism
- Poles of a Magnet
- A magnet has two ends called poles: the north
- pole and the south pole. The magnetic forces
- of the magnet are strongest at the poles.
- When two magnets are brought close together,
- they will attract or repel, depending on which
- poles are brought together:
Self-assessment (checklist)
- I can describe how a magnetic field is produced
- I can describe what affects the strength of the
- I can explain how shaping a wire into a solenoid
- I can give two properties of the magnetic field
- I can describe how the magnetic effect of a current
- I can draw the magnetic field pattern for a straight
- I can interpret diagrams of electromagnetic devices
Key steps (method)
- Identify what the question is testing and use the correct equation/definition.
- Show substitutions and units clearly.
Common mistakes
- Unit conversions, rearranging errors, or quoting a law without applying it.