GRADE 12: ELECTRICITY AND MAGNETISM
Section	Sub-section
ELECTRODYNAMICS
Heating effects of electric currents	Electric currents produce heat in conductors Electric power The definition of emf (electromagnetic force) The emf of a battery Internal resistance Power in AC circuits Efficiency Fuses Light bulbs
Inductive circuits	A circuit causing induction Inductance Inductance in series and parallel
Electrical machines	Electric motors Generators
Alternating current	Alternating currents Root mean square voltage and current
Resistive, capacitive and inductive ac circuits	Resistive AC circuit Capacitive AC circuit Inductive AC circuit Impedance of an AC circuit
Alternating currents and safety	The domestic power supply Correct wiring of appliances Earthing
ELECTRONICS
Active circuit elements	Introduction The junction diode The light emitting diode (LED) The transistor The operational amplifier Filters
Principles of digital electronics	Introduction Logic circuits Logical operators Logic gates
ELECTROMAGNETIC RADIATION
Electromagnetic waves	Introduction The wave nature of EM radiation The speed of EM radiation The particle nature of EM radiation The electromagnetic spectrum