Question

If $2.2 \, kW$ power is transmitted through a $10 \, W$ line at $22 \, kV$, power loss in the form of heat will be

• A. 0.1 W
• B. 1 W
• C. 0.01 W
• D. 10 W

Answer 1

Answer: (A)

0.1 W

Answer 2

P = $V\times \,I$ i.e $I=\frac{P}{V} =\frac{2.2}{22} = 0.1A$
Power Loss = $I^2R\, =\, 0.1 \times 0.1 \times 10 \,=\,0.1\, W$