We will use a video to explore the dependence of the current through the filament of an incandescent light bulb on the voltage applied to the light bulb. The relationships between these particular quantities is essential to the general study of electric circuits. Specifically, we will: Take measurements to determine how the resistance of the light bulb is affected by the applied voltage. Determine how the power dissipated by the light bulb is affected by the applied voltage. Use the results of these measurements to estimate the temperature of the light bulb's filament.