To investigate the variation of current with p.d. for a filament bulb
To investigate the variation of current with p.d. for a metallic conductor
To investigate the variation of current with p.d. for a semiconductor diode
To measure the resistivity of a material of a wire
To investigate the variation of the resistance of a metallic conductor
To investigate the variation of the resistance of a thermistor with tempera
To investigate the variation of current with p.d. for a copper sulfate sol