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• 12:05, 20 April 2022 Physdemo talk contribs created page Series Circuit with Light Bulbs (Created page with "{{NewDemo|subject=Electricity and Magnetism|topic=Resistance, EMF, and Current|file1=}} Two light bulbs are hooked in series. A third light bulb is connected directly to a variac (120v). The two series bulbs are half as bright and when the variac is adjusted to the brightness of the series bulbs it is at 50%. When a 75w bulb and a 25w bulb are connected in series only the 25w bulb lights up because it has a higher resistance and therefore most of the available voltage i...")