In this investigation I will carry out an experiment to distinguish how the length of a wire, disrupts the behaviour of the resistance.
Throughout this investigation I will include my prediction, method, diagram, results and a graph to show the relationship between the length of the wire and the resistance.
Remember that resistance occurs when the electrons travelling along the wire collide with the Ions of the wire. Also remember when the resistance is increased, the current will decrease. Resistance is a measure of how hard it is to move the electrons through the wire.
The length of the wire also makes a difference in the resistance because, if the length of the wire is increased then the resistance will also increase as the, electrons will have a longer distance to travel and so more collisions will occur. Due to this
the length increase should be proportional to the resistance increase.
Metals are good conductors of electricity, which is why the big free group of electrons can get away by applying the voltage. Then if an Ion gets in the way of an electron, and the electron collides with the Ion then the electron, will be slowed down and the Ion will also capture some of its energy. The most frequent effects that this will cause would be, a decrease of current and the metal will acquire water.
My prediction in this investigation will be, when you increase the length of the wire, this will lead to the increasing of the resistance and it might also release heat energy.
In a longer piece of wire, there would be more Ions for the electrons to collide with and so this would increase the resistance.
This is caused, from the distance the electrons have to travel. When the electrons have to travel a further distance, there is more of a risk for them to collide with the Ions.
The free electrons collide with the Ions, causing high resistance and low current flow.
When the collision occurs, this causes it to releas...