Consider a composite wire that the sloppy electrician has produced: This time, he connected two wires of the same diameter, 0.5 mm, but of different materials: One part is made of silver and 1 m long, the other is made of copper and 80 cm long. When you apply a potential difference of 6 V to, the ends of the composite wire,
a) what is the resistance of each section?
b) What is the current in each section?
c) What is the magnitude of the electric field in each section?
d) What is the potential difference between the ends of the silver section of the wire?