Sketch and explain the current-voltage graphs for a resistor of constant resistance, a filament lamp and a diode

Know the difference between direct current (d.c.) and alternating current (a.c.)

Draw and interpret circuit diagrams containing cells, batteries, power supplies, generators, potential dividers, switches, resistors (fixed and variable), heaters, thermistors (NTC only), light-dependent resistors (LDRs), lamps, motors, bells, ammeters, voltmeters, magnetising coils, transformers, fuses and relays and know how these components behave in the circuit