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12 (b)

A nuclear power station makes useful electrical energy. It also wastes energy. Look at the diagram.

energy wasted through the cooling towers

1 000 000 J of energy supplied

50 000 J lost by other methods

nuclear power station

useful electrical energy output

The power station has an electrical efficiency of 0.35 (35%). Calculate the energy wasted through the cooling towers. ..................................................................................................................................................... ..................................................................................................................................................... answer ........................................................ J [2]

Š OCR 2011

SPECIMEN


P2 question 6 (2)