A power station delivers 740 kW of power at12,000 V to a factory through wires w

Question

A power station delivers 740 kW of power at12,000 V to a factory through wires with total resistance 3.3 .

Part A

How much less power is wasted if the electricity is delivered at 50,000 V rather than 12,000 V?

Express your answer to two significant figures and include the appropriate units.

A power station delivers 740 kW of power at12,000 V to a factory through wires with total resistance 3.3 .

Part A

How much less power is wasted if the electricity is delivered at 50,000 V rather than 12,000 V?

Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

P = 740,000 W
V = 12,000 V
R = 3.3 ohm

1. E = V^2/R
E1 = 43636363.6363 J
E2 = 757575757.5757 J
dE = 713939393.9394 J
2.

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