What factors affect the resistance of a material?

... Year 11 Physics Coursework: What factors affect the resistance of a material? In this investigation my objective is to investigate how does the length of piece of wire affect its resistance, I will need to find background information of resistance, and use the theories to carry series of experiments to investigate this. Background Knowledge Resistance is the force that opposes the movements of electrons through a circuit caused by the atoms of the materials. The flow of electrons in a circuit moves from the negative of a cell/battery to the positive of the cell/battery, this is discovered after the discovery of the conventional current. (See figure 1). Resistance is produced in metals from the atoms inside that are arranged in a regular structure called lattice. Electrons inside the metal can move free in the lattice structure in random directions, where positive metal ions arranged in the lattice, where they vibrate on the spot.

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