A-LevelPhysicsWork, energy and power9702/12 · Oct/Nov 2012 · Q221 Mark
Trains supply coal to a power station. The table below gives quantities describing the operation of the power station. [Table with symbol and unit for power station output, number of trains per day, mass of coal on a train, energy from 1 kg of coal, number of seconds in one day] Which expression gives the efficiency of the power station?
APS / NMJ
BPSN / MJ
CNMJ / PS
DNM / PSJ
✓ Correct answer
A: PS / NMJ
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