A cable of resistance $10\,\Omega $ carries electric power from a generator producing $250\, kW$ at $10000\, volt$, the power lost in the cable during transmission is ............. $kW$
A$12.5$
B$6.25$
C$25$
D$3.15$
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B$6.25$
b (b) Power lost in cable $ = 10 \times {(25)^2} = 6250\,W = 6.25\,\,kW$
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