Resistance Coursework
Planning:
Aim
Investigate how the length of a wire affects the current and resistance of a wire.
Variables
The variables that could change resistance are:
Length of the wire
Cross section area (thickness)
Changing materials
Changing temperatures
The variable I am going to change in my experiment is the length of the wire.
Prediction and Hypothesis
I think as you increase the length of the Constantan wire, you also increase the amount of resistance. The current is the flow of electrons; the current is dependent on the amount of voltage, which is applied. Voltage is the push given to the current. The current has to go through a circuit, which contains resistance so if you increase that push you also increase the flow of the current. All materials have a slight resistance to electricity factors affecting the resistance are: Length, Voltage & Temperature and Surface Area.
Preliminary Work
Changing only the length of the wire
Length......
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