Should light bulbs (ordinary incandescent bulbs with tungsten filaments) be considered ohmic resistors? Why or why not? How would this be determined experimentally?

Provide reasoning for your answer and describe a method to determine this experimentally. Incandescent light bulbs cannot be considered as ohmic resistors because their resistance changes with the applied voltage and temperature. This non-linear behavior is illustrated by a curved voltage-current (V-I) graph, as opposed to the linear graph observed for ohmic resistors. To determine this experimentally, a V-I graph can be plotted using data collected from a simple electrical circuit containing a light bulb connected to a variable power source (like a rheostat), an ammeter to measure the current, and a voltmeter to measure the voltage across the light bulb. Gradually increasing the voltage applied to the light bulb and observing how the current changes can help us analyze whether the light bulb exhibits ohmic behavior by evaluating the linearity of the V-I graph. Since incandescent light bulbs with tungsten filaments show a non-linear relationship between voltage and current, they cannot be considered ohmic resistors.