Saved Bookmarks
| 1. |
Two cities are 150 km apart. Electric power is sent from one city to another city through copper wires. The falI of potential per km is 8 volt and the average resistance per km is 0.5 Omega . The power loss in the wire is ..... |
|
Answer» 19.2 W TOTAL voltage drop V = `150 xx 8 = 1200` V Total resistance of wire R=` 0.5 xx 150 = 75 OMEGA ` Power loss in the wire, `(V^(2))/(R) = ((1200)^(2))/(75)` = 19200 W = 19.2 kW |
|