A silver wire and a copper wire are welded together as shown in the figure. The left end of the silver wire is at 8.00 V and the right end of the copper wire is at 3.00 V. Both wires carry the same current of 1 = 4.50 A, and both have the same diameter 0.600 mm. 8.00 V E=2.30 V/m 120 cm silver 80.0 cm copper (a) Find the electric field in the copper wire, E, the potential at the silver/copper interface, and the drift speed in each wire. Recall that V-V--| E-di. Hint: Apply this equation twice, one for the silver wire to find the potential at the interface, and then for the copper wire to find the electric field. You may assume the electric field is constant in both wires. 3.00 V TABLE 30.1 Conduction electron density in metals Metal Aluminum Copper Iron Gold Silver Electron demity (m) 60x 10 85X10 lo 59x 10 58 x 10 (b) How many minutes does it take an electron to move from one end of the wire to the other?