A minute later the current is only 081 a what is the

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Reference no: EM13627648

Consider a light bulb with a filament made from tungsten (with a resistivity temperature coefficient of 4.5E-3/K). Suppose the bulb is off, and at a temperature of 23 degrees C. Then let the bulb be switched on. For the first instant, while the temperature has not yet had a chance to increase, the current in the bulb is 1.76 A. Then the current decreases with time. A minute later, the current is only 0.81 A. What is the temperature T (in degrees C) of the filament at that time? The voltage driving the lightbulb filament stays the same as the filament heats.

Reference no: EM13627648

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