HOW DOES THE LENGTH OF A WIRE AFFECT THE RESISTANCE?
Aim: To investigate how the length of the wire affects the resistance of a wire.
List of Equipment: Ammeter – Voltmeter – Power Pack – Variable Resistor –
6 Wires – Block of Wood (mayn’t be supplied) – Test Wire - 2 Crocodile Clips – Metre Ruler.
Variables: Everything should stay the same but:
- The length of the wire.
- The position of the variable resistor.
- Voltage across wire.
- Current in circuit.
- Temperature of wire.
- The resistance of the wire (will be calculated).
Diagram: