RP4: Current / P.D. Characteristics

Question 1

Circuit setup

Answer 1

Battery connected to a resistor by wires
Resistor in series with ammeter and variable resistor
Voltmeter in parallel behind the resistor

Question 2

Method

Answer 2

Use voltmeter to read potential difference across resistor
Use ammeter to read current through resistor
Record values in table
Adjust variable resistor several times and repeat.
Switch direction of battery.
Repeat experiment with battery reversed