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National Grid Example a. 1 metre of the copper wires used in the National Grid has resistance. The distance from the power station in Droitwich to Malvern.

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Presentation on theme: "National Grid Example a. 1 metre of the copper wires used in the National Grid has resistance. The distance from the power station in Droitwich to Malvern."— Presentation transcript:

1 National Grid Example a. 1 metre of the copper wires used in the National Grid has resistance. The distance from the power station in Droitwich to Malvern is 30 km. What is the resistance of the wires between Droitwich and Malvern? b. The power station generates 36 KW of power. If this was transferred to Leeds at a Voltage of 240 V, what would be the current flowing in the wires ? c. If this current was flowing through the wires, what would be the power lost due to heating of the wires ?

2 d. What percentage of the power generated by the power station is lost due to heating the wires ? e. If the power was transferred to Leeds at a Voltage of 24 000V instead, what would be the current flowing in the wires ? e. If this current was flowing through the wires, what would be the power lost due to heating of the wires ? f. What percentage of the power generated by the power station is now lost due to heating of the wires ?

3 National Grid Example a. 1 metre of the copper wires used in the National Grid has resistance. The distance from the power station in Droitwich to Malvern is 30 km. What is the resistance of the wires between Droitwich and Malvern? b. The power station generates 36 KW of power. If this was transferred to Leeds at a Voltage of 240 V, what would be the current flowing in the wires ? c. If this current was flowing through the wires, what would be the power lost due to heating of the wires ?

4 d. What percentage of the power generated by the power station is lost due to heating the wires ? e. If the power was transferred to Leeds at a Voltage of 24 000V instead, what would be the current flowing in the wires ? e. If this current was flowing through the wires, what would be the power lost due to heating of the wires ? f. What percentage of the power generated by the power station is now lost due to heating of the wires ?

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