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Does a Light Bulb Obey Ohm's Law? Obtaining Table of Results Voltage 1 Current 1 Voltage 2 Current 2 Average Voltage Average Current Average Resistance 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 0.37 0.5 0.38 0.5 0.375 1.33 1.0 0.56 1.0 0.55 1.0 0.555 1.80 1.5 0.63 1.5 0.64 1.5 0.635 2.36 2.0 0.72 2.0 0.72 2.0 0.72 2.78 2.5 0.75 2.5 0.74 2.5 0.745 3.36 3.0 0.85 3.0 0.86 3.0 0.855 3.51 3.5 0.90 3.5 0.91 3.5 0.905 3.87 4.0 0.98 4.0 0.99 4.0 0.985 4.06 4.5 1.04 4.5 1.04 4.5 1.04 4.33 5.0 1.09 5.0 1.10 5.0 1.095 4.57 5.5 1.17 5.5 1.17 5.5 1.17 4.70 6.0 1.23 6.0 1.24 6.0 1.235 4.86 6.5 1.27 6.5 1.27 6.5 1.27 5.12 7.0 1.30 7.0 1.31 7.0 1.305 5.36 7.5 1.39 7.5 1.39 7.5 1.39 5.40 8.0 1.42 8.0 1.43 8.0 1.425 5.61 8.5 1.45 8.5 1.46 8.5 1.455 5.84 9.0 1.48 9.0 1.48 9.0 1.48 6.08 9.5 1.56 9.5 1.57 9.5 1.565 6.07 10.0 1.59 10.0 1.60 10.0 1.595 6.27 10.5 1.62 10.5 1.63 10.5 1.625 6.46 11.0 1.65 11.0 1.65 11.0 1.65 6.67 Analysis After conducting my experiment and analysing my results I have found that a light bulb does not obey ohm's law, it is a non-ohmic conductor. From the graph obtained from the results it is clearly shown how ohm's law doesn't apply to the light bulb. The graph clearly shows that the current is not proportional to the voltage. The graph shows that as the voltage increased the increase in current was reduced. i.e. when the potential difference was 4 volts the current increased by 0.34 amps, when the potential difference was 8 volts the current increased by 0.22 amps. The results can be explained using science. Variables The variables in the experiment Independent variable I altered this variable. * Voltage Controlled Variables * Length of wire * Cross sectional area of wire * Wire Material * Light Bulb Fair Test Controlled Variables For the interest of a fair test and accurate...

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