Question#1: A 10-gauge copper wire in a typical residential building has a cross-sectional area of 3.31 x 10-9m2. If it carries a current of 1000 mA, what will be drift velocity of electrons if there are 9 carrier charges? Question#2: A resistor is constructed of a carbon rod that has a uniform cross-sectional area (A) of 5 m2 and conductivity = 3.5 x 10-9. When a potential difference of 25 V is applied across the ends of the rod, there is a current of 6 mA in the rod. Find the following: 1) Resistance of the rod 2) Length of the rod