Question

A 18.0-m length of wire consists of 9.0 m of copper followed by 9.0 m of aluminum, both of diameter

1.5 mm . A voltage difference of 75 mV is placed across the composite wire. The resistivity of copper is 1.68×10−8Ω⋅m and the resistivity of aluminum is 2.65×10−8Ω⋅m.

A. What is the voltage across the copper part?

B. What is the voltage across the aluminum part?

Answer 1

3 As bosth wines ane i be heuce podeutial tu the natio ot she AL Cu 1.62 VAL 65 Ve = 45.9 mV