What is the resistance of the filament

Reference no: EM13715680

Problem: A small bulb is rated at 7.50 W when operated at 125 V. The tungsten filament has a temperature coefficient of resistivity is 4.50 × 10³ /°C. When the filament is hot and glowing, its temperature is seven times room temperature (20°C).

Part A: What is the resistance of the filament (in ohms) at room temperature?

I need help to find the resistance of the filament (in ohms) at room temperature.

Reference no: EM13715680

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