current / pd characteristics (not done)

Set up a series circuit with a battery, variable resistor and ammeter so…

you can generate an electrical current and measure it.

Set up a voltmeter in parallel with the variable resistor so…

you can control the voltage.

Record the starting potential difference across the variable resistor at its lowest resistance and current so…

you have starting values.

Adjust the voltmeter so the voltage increases by 1V and record the readings on the voltmeter and ammeter so…

you can observe how voltage and ammeter change.

Change the resistance by the same interval 10 times and record the readings on the voltmeter and ammeter each time so…

you get a range of results.

Switch the direction of the battery so…

the direction of the potential difference is reversed.

Record 10 more readings decreasing the voltage by 1 each time to …

observe how current changes when voltage changes direction.

Plot a graph of the results to …

visually see the directly proportional relationship between current and potential difference.

Repeat setting up a circuit