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July 1, 2015

Homework Help: Physics

Posted by Joseph on Tuesday, February 23, 2010 at 1:19pm.

The typical resistance of the tungsten filament of a 60 watt incandescent light bulb when it is turned off is 24 ohms and its resistance when operating from a 120 volt power source is 240 ohms. Generally, an incandescent light bulb filament is most likely to “burn out” when it is first turned on than at any other time. Explain why? HINT: Calculate the power dissipated when first turned on.

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