Question: The current in a 100 watt lightbulb is 0.85 A. The filament inside the bulb is 0.25 mm in diameter. a. What is the current

The current in a 100 watt lightbulb is 0.85 A. The filament inside the bulb is 0.25 mm in diameter.
a. What is the current density in the filament?
b. What is the electron current in the filament?

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