Response to the following problem:
a. What is the resistance of a copper bus-bar with the dimensions shown (T 20°C) in Fig.?
b. Repeat (a) for aluminum and compare the results.
c. Without working out the numerical solution, determine whether the resistance of the bar (aluminum or copper) will increase or decrease with an increase in length. Explain your answer.
d. Repeat (c) for an increase in cross-sectional area.
