rat3es of reaction

Adeel Malik 11/g December 2002


Aim

The aim of this experiment is to investigate how the resistance of a wire changes in relationship to its length. We will increase the length of the wire and measure the voltage and current, and then calculating the resistance.


Prediction

I think that as the length of the wire increases so will the resistance of it. I also believe that the rate at which the length of the wire is increased, the resistance of the wire will also increase in direct proportion to the length. The graph to show this should therefore look something like this:



















A graph to show the relationship between resistance of a wire and it’s length.
The resistance of the wire is directly proportional to the length of it.


Theory

With electricity, the property that transforms electrical energy into heat energy, in opposing electrical current, is resista...