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Introduction: In the following experiment, I predict that the filament bulb in which we are testing, on will not obey ohm's law. Their are many factors which make me believe this, such as the temperature of the bulb. If the filament bulb DID obey Ohm's Law, then the temperature would remain constant, meaning there would be resistance. When I think of a light shining, the temperature does not stay the same. Therefore I believe that the light bulb will not obey Ohm's law. The formula for Ohm's law is: RESISTANCE = pd or R = V current I The current through a wire is proportional to potential difference (voltage across the wire) providing the temperature does not change - (which I predict it shall). CHANGE IN TEMPERATURE = CHANGE IN RESISTANCE To make this a fair test, I must keep a close watch of the readings. I will include a trial run to make sure everything goes to plan....

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