• question_answer If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in the form of heat will be [MP PMT/PET 1998] A)            0.1 watt                                  B)            1 watt C)            10 watt                                    D)            100 watt

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 $m=6.56\,\,g/s\,$            ${{P}_{L}}={{\left( \frac{P}{V} \right)}^{2}}R=\frac{{{P}^{2}}R}{{{V}^{2}}}$ $=\frac{2.2\times {{10}^{3}}\times 2.2\times {{10}^{3}}\times 10}{22000\times 22000}=0.1W$