A copper wire has a cross sectional area A1 = 10¯ m² and has a density of charge carriers of 102⁹ electrons/m³. As shown in the figure, the copper wire is attached to an equal length of aluminum wire with a cross sectional area A2 = 7 × 108 m², and density of charge carriers of 5 × 1028 electrons/m³. A current of 6 A flows through the copper wire. Approximate resistivities of copper and aluminum are pcu = 2 × 10¯³ £2.m and pÃ¡ = 3 × 10 92.m respectively. Copper wire Aluminum wire What is the current flowing through the Aluminum wire ? What is the ratio of the drift velocities in the two wires Vc./ VAI ?

A copper wire has a cross sectional area A1 = 10¯ m² and has a density of charge carriers of 102⁹ electrons/m³. As shown in the figure, the copper wire is attached to an equal length of aluminum wire with a cross sectional area A2 = 7 × 108 m², and density of charge carriers of 5 × 1028 electrons/m³. A current of 6 A flows through the copper wire. Approximate resistivities of copper and aluminum are pcu = 2 × 10¯³ £2.m and pÃ¡ = 3 × 10 92.m respectively. Copper wire Aluminum wire What is the current flowing through the Aluminum wire ? What is the ratio of the drift velocities in the two wires Vc./ VAI ?