In household wiring, usually 12-gauge copper wire (diameter 12 mm) is used. A light bulb is connected to power supply through such a wire. A 5 -Ampere current runs through the wire and the light bulb. a. What is the resistance of 50-meter length of the wire? b. How many electrons pass through the light bulb each second? c. What is the current density in the wire?
In household wiring, usually 12-gauge copper wire (diameter 12 mm) is used. A light bulb is connected to power supply through such a wire. A 5 -Ampere current runs through the wire and the light bulb. a. What is the resistance of 50-meter length of the wire? b. How many electrons pass through the light bulb each second? c. What is the current density in the wire?
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Transcribed Image Text:In household wiring, usually 12-gauge copper wire (diameter 12
mm) is used. A light bulb is connected to power supply through such a wire.
A 5 -Ampere current runs through the wire and the light bulb.
a. What is the resistance of 50-meter length of the wire?
b. How many electrons pass through the light bulb each second?
c. What is the current density in the wire?
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