Resistance of a Wire

Some variables that will be relevant to this investigation are:

Of these the variables will be input and output voltages in experiment one, and length and resistance in experiment two. The other variables (temperature, material and voltage) will have to be kept constant in both experiments to make sure that only length, thickness and resistance are investigated. In experiment 1 the same bit of wire and the same thickness need to be kept constant. In experiment 2, the length will need to be kept constant to make sure only the variables indicated are investigated to ensure a fair test.

Metals conduct electricity because the atoms in them do not hold on to their electrons very well, and so creating free electrons, carrying a negative charge to jump along the line of atoms in a wire. Resistance is caused when these electrons flowing towards the positive terminal have to ¡¥jumps¡¦ atoms. So if we double the length of a wire, the number of atoms in the wire doubles, so the number of jumps double,

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Some common words found in the essay are:
Evaluation Experiment, , Method Experiment, Physics¡¦ Abbott, directly proportional, ammeters voltmeters, resistance wire, kept constant, current flow energy, atoms wire, flow energy, experiment accurate, current flow, using formula, resistance results, factors temperature voltage, accurate average investigate, temperature voltage current, investigate factors temperature,
Approximate Word count = 1591
Approximate Pages = 6 (250 words per page double spaced)