Question

If 2.2 kilowatt power is being transmitted at 44 KV on a 20 $\Omega$ line, then power loss will be :

• A. 0.1 watt
• B. 1.4 watt
• C. 100 watt
• D. 0.05 watt

Answer 1

The correct option is D 0.05 watt

$I=\frac{P}{V}=\frac{2200}{44000}=\frac{1}{20}A$
Power loss = $I^{2}R=(\frac{1}{20}{)}^{2}20=0.05W$