The voltage in typical household wiring is 120 volt a 100, Ask an Expert

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The voltage in typical household wiring is 120 Volt. A 100 Watt light bulb therefore draws a current of 0.83 Amp when connected. If the filament of the light bulb has a diameter of 0.065 millimeter,

obtain what is the current density in the filament?

___________ A/m2 (in the direction of the current)

Find the ratio of this current density to that in a 12-guagewire (diameter 0.21 centimeter) supplying current to the light bulb?

___________(Jfilament /Jwire)

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Category:- Physics
Reference No.:- M91192030

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