A 2.0-mm length of wire is made by welding the end of a 120-cm-long silver wire to the end of an 80-cm-long copper wire. Each piece of wire is 0.60 mm in diameter. The wire is at room temperature, so the resistivities are as given in Table 25.1. A potential difference of 5.0 V is maintained between the ends of the 2.0-m composite wire.
(a) What is the current in the copper section?
(b) What is the current in 1he silver section?
(c) What is the magnitude of E in the copper?
(d) What is the magnitude of E in the silver?
(e) What is the potential difference between the ends of the silver section of wire?