The figure shows wire section 1 of diameter D_1 = 6.50R and wire section 2 of di

Question

The figure shows wire section 1 of diameter D_1 = 6.50R and wire section 2 of diameter D_2 = 4.00R, connected by a tapered section. The wire is copper and carries a current. Assume that the current is uniformly distributed across any cross-sectional area through the wire's width. The electric potential change V along the length L = 1.50 m shown in section 2 is 15.0 muV. The number of charge carriers per unit volume is 8.50 times 10^28 m^-3. What is the drift speed of the conduction electrons in section 1?

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