4. What is the resistance of a 1,000 ft. long copper wire if the cross-sectional area is 3,200 cm with a resistivity of 10.37 ohm-CM per ft. at 20C? a) 2.24 ohms b) 3.24 ohms c) 4.24 ohms d) 5.24 ohms 5. A copper wire has a diameter of 0.325 inch and a resistance of 0.6 ohm at 20 C, calculate its length. a) 5,799.86 ft. b) 4,799.86 ft. c) 3,799.86 ft. d) 2,799.86 ft. 10. What is the current if 12.48 x 1017 electrons pass through a wire in 100 milliseconds? a) 0.5 ampere b) 1.0 ampere c) 1.5 amperes d) 2.0 amperes