Electricity & Magnetism
Use this page to review the core ideas, then practise with your lecture questions, tutorials and past papers.
Core ideas
- Electric fields describe force per unit charge.
- Electric potential relates energy to charge.
- Ohm's law connects voltage, current and resistance for an ohmic element.
- Magnetic fields act on moving charges and currents.
- Faraday's law links changing magnetic flux to induced emf.
Practice checklist
- Draw circuit diagrams clearly.
- Use Kirchhoff's laws systematically.
- Track vector directions in field problems.
- State whether a quantity is scalar or vector.