Question

Please solve q 13?

Answer 1

`"30 kilowatts"`

Explanation:

Resistance of cable is

`"R" = 15 cancel"km" × "0.2 Ω"/cancel"km" = "3.0 Ω"`

Power loss is given by

`"P" = "I"^2"R"`

`"P" = ("100 A")^2 × "3.0 Ω" = 3 × 10^4\ "Watt" = color(Green)"30 kW"`