A) 0.1 watt
B) 1 watt
C) 10 watt
D) 100 watt
Correct Answer: A
Solution :
For power transmission power loss in line \[{{P}_{L}}={{i}^{2}}R\] If power of electricity is P and it is transmitted at voltage V, then \[P=Vi\] Þ \[m=6.56\,\,g/s\,\] \[{{P}_{L}}={{\left( \frac{P}{V} \right)}^{2}}R=\frac{{{P}^{2}}R}{{{V}^{2}}}\] \[=\frac{2.2\times {{10}^{3}}\times 2.2\times {{10}^{3}}\times 10}{22000\times 22000}=0.1W\]
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