Two cities are 150 km apart. Electric power is sent from one city to another city through copper wires. The fall of potential per km is 8 volt and the average resistance per km is 0.5 The power loss in the wire is:
(A) 19.2 W
(B) 19.2 kW
(C) 19.2 J
(D) 12.2 kW
Correct option (B) 19.2 kW
Explanation:
Total voltage drop = 150 × 8 = V
total resistance of wire R = 0.5 × 150
