An electric current of intensity l=5 A flows through a 12-gauge copper wire (diameter D=2.05mm) and a light bulb. The electron density of copper is n=8.5x1028 electrons per cubic meter. (e¯ = -1.6x10-¹⁹) 1) II) 33. Find the number of electrons that pass through the bulb in each second. Find the electric current density J (in A/m^2) on the wire. Find the drag velocity or drift of the electrons in the wire. If we double the diameter of the wire section, which of the above calculated quantities changes?
An electric current of intensity l=5 A flows through a 12-gauge copper wire (diameter D=2.05mm) and a light bulb. The electron density of copper is n=8.5x1028 electrons per cubic meter. (e¯ = -1.6x10-¹⁹) 1) II) 33. Find the number of electrons that pass through the bulb in each second. Find the electric current density J (in A/m^2) on the wire. Find the drag velocity or drift of the electrons in the wire. If we double the diameter of the wire section, which of the above calculated quantities changes?
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Transcribed Image Text:An electric current of intensity l=5 A flows through a 12-gauge copper wire (diameter D=2.05mm) and a
light bulb. The electron density of copper is n=8.5x1028 electrons per cubic meter. (e¯ = -1.6x10-¹⁹)
1)
II)
33.
Find the number of electrons that pass through the bulb in each second.
Find the electric current density J (in A/m^2) on the wire.
Find the drag velocity or drift of the electrons in the wire.
If we double the diameter of the wire section, which of the above calculated quantities
changes?
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