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dcu Copper wire Aluminum wire Submit Answer Tries 0/100 L L A copper wire has a diameter dcu = 0.0453 cm, is L = 3.07 m long, and has a density of charge carriers of 8.50 - 1028 electrons/m³. As shown in the figure, the copper wire is attached to an equal length of aluminum wire with a diameter dal = 0.0137 cm and density of charge carriers of 6.02 1028 electrons/m³. A current of 0.400 A flows through the copper wire. a) What is the ratio of the current densities in the two wires, Jcu/JAI? dal b) What is the ratio of the drift velocities in the two wires, Vd-Cu/Vd-Al?

dcu Copper wire Aluminum wire Submit Answer Tries 0/100 L L A copper wire has a diameter dcu = 0.0453 cm, is L = 3.07 m long, and has a density of charge carriers of 8.50 - 1028 electrons/m³. As shown in the figure, the copper wire is attached to an equal length of aluminum wire with a diameter dal = 0.0137 cm and density of charge carriers of 6.02 1028 electrons/m³. A current of 0.400 A flows through the copper wire. a) What is the ratio of the current densities in the two wires, Jcu/JAI? dal b) What is the ratio of the drift velocities in the two wires, Vd-Cu/Vd-Al?

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dcu ↓ Copper wire i Submit Answer Tries 0/100 Aluminum wire L L A copper wire has a diameter dcu = 0.0453 cm, is L = 3.07 m long, and has a density of charge carriers of 8.50 1028 electrons/m³. As shown in the figure, the copper wire is attached to an equal length of aluminum wire with a diameter dal = 0.0137 cm and density of charge carriers of 6.02 1028 electrons/m³. A current of 0.400 A flows through the copper wire. a) What is the ratio of the current densities in the two wires, Jcu/JAI? dal b) What is the ratio of the drift velocities in the two wires, Vd-Cu/Vd-Al? .
Transcribed Image Text:dcu ↓ Copper wire i Submit Answer Tries 0/100 Aluminum wire L L A copper wire has a diameter dcu = 0.0453 cm, is L = 3.07 m long, and has a density of charge carriers of 8.50 1028 electrons/m³. As shown in the figure, the copper wire is attached to an equal length of aluminum wire with a diameter dal = 0.0137 cm and density of charge carriers of 6.02 1028 electrons/m³. A current of 0.400 A flows through the copper wire. a) What is the ratio of the current densities in the two wires, Jcu/JAI? dal b) What is the ratio of the drift velocities in the two wires, Vd-Cu/Vd-Al? .
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