People keep trying to help, but their answers are wrong! a. A high-voltage trans

Question

People keep trying to help, but their answers are wrong! a. A high-voltage transmission line with a resistance of1.32 /km carries a current of 1040 A. The line is atpotential of 740 kV at the power station and carries the current toa city located 163 km from the station. What is thepower loss due to resistance in the line? _______W People keep trying to help, but their answers are wrong! a. A high-voltage transmission line with a resistance of1.32 /km carries a current of 1040 A. The line is atpotential of 740 kV at the power station and carries the current toa city located 163 km from the station. What is thepower loss due to resistance in the line? _______W

Explanation / Answer

   Totalresistance   =   2 * resistance perunit length * length    ( multiplication by 2 is due to the factthat it takes two lines for transmission of electric power)    R   =   2 *1.32 /km * 163 km          =   430.32       Powerloss   P   =   I2* R                               =   10402* 430.32                               =   4.65* 108   W

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