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Does A Light Bulb Obey Ohms Law Aim: My aim is to carry out an investigation to find out whether a filament light bulb obeys ohms law. I am carrying out an experiment to find the different resistances and currents created by a light bulb at different voltages. Because of the light bulb, it glows white-hot when fully on, the resistance will change at different voltages. When the voltage is low and the bulb is not very bright, it won't be as hot and therefore it will have less resistance. But when the current is high and the bulb is brighter, it will have a high resistance. Theory: Ohms law suggests that if you were to increase the P.D (potential difference) across a resistor then the current flowing through a resistor will increase. This means that the current would evenly go up as the P.D increases. Definition: Ammeter: This is a device that measures the current of electrons in Amps. It...

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