Find current in an electromagnet connected

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1. A power station delivers 750 kW of power at 12,000 V to a factory through wires with total resistance of 3 W. How much less power is wasted if electricity is delivered at 50,000 V?

2. The current in an electromagnet connected to a 240 V line is 17.5 A. At what rate must cooling water pass over the coil if water temperature is to rise no more than 6.5 K?

Reference no: EM132802739

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