Question

(Excerpts from Copper-Wire Table American Wire Gage (B. and S.) Diameeer in M e 20C Ohms per 1,000 ft 25 C. 77F Approx. Pounds per 1,000ft B&S Area Crcular Mis Gage No 289 30 83.690,00 0.1264 253.00 257.60 201.00 2 66.370,00 0.1593 101,90 10.380.00 1.018 31.00 10 90.74 8,234.00 11 1.284 25.00 2000 12 80.81 6,530.00 1.619 13 71.96 5,178.00 15.70 2.042 64.08 14 4,107.00 2.575 12.40 15 57.07 3.257.00 3.247 9.80 16 50,82 2,583.00 4/094 7.80 18 40.30 1,624.00 6.510 450 20 31.96 1.022.00 10.350 3.10 21 28.46 810.10 13.060 250 22 25.35 642.40 16.460 1.90 23 22.57 509.50 20.760 1.50 24 20.10 404.00 26.170 1.20 26 15.94 254.10 41.620 0.77 28 12.64 159.80 66.170 0.48 30 10,03 100.50 105.200 0.30 32 7.95 63.21 167.300 0.19 34 6.31 39.75 266.000 0.12 5. Two electronics technicians are discussing the wire resistance table shown. Technician A says that the resistance of a 300-foot section of wire with a cross-sectional area of 642.40 circular mils will have a resistance of 16.46 ohms. Technician B savs that a 500-foot section of wire with a cross-sectional area of 642.40 circular mils will have a resistance of 8.2 ohms. Which of the following statements is correct? 5. Two electronics technicians are discussing the wire resistance table shown. Technician A says that the resistance of a 300-foot section of wire with a cross-sectional area of 642.40 circular mils will have a resistance of 16.46 ohms. Technician B says that a 500-foot section of wire with a cross-sectional area of 642.40 circular mils will have a resistance of 8.2 ohms. Which of the following statements is correct? A. Only Technician A is correct B. Only Technician B is correct O C. Neither of the two technicians is correct O D. Both of the technicians are correct

Answer 1

A substance that possesses higher resistivity will offer low conductivity, and vice versa.

thus,

B) Only technician B is correct