Equipment:2x digital multimetersWiresPower packVariable resistor (1kOhm)

Setup the circuit as shown in the diagram above.Set the variable resistor to a position of 0ohm (IV) and then turn on the power packMeasure the current and voltage (DVs) and record it in the table below. Repeat this 3 times.Switch off the power pack for a half a minute to let the wires cool.Repeat for other resistances from 1-1000 with intervals of 200ohmPlot graph of V against I, Emf is y intercept, resistance is abs of gradient

Safety:Do not touch exposed wiresDo not put water near the circuitKeep the voltage at a suitable level (9v?)

CVs:Voltage of the supplyLengths of wire connecting componentsComponents