27. Resistors & DC Circuits
Resistors and Ohm's Law
Problem 25f
Textbook Question
Textbook QuestionA cylindrical tungsten filament 15.0 cm long with a diameter of 1.00 mm is to be used in a machine for which the temperature will range from room temperature (20°C) up to 120°C. It will carry a current of 12.5 A at all temperatures. (c) What will be the maximum potential drop over the full length of the filament?
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