Question
Edexcel Paper 1F (Foundation)
A motor is supplied with 800 J of electrical energy. It transfers 560 J usefully to lift a load. The rest is wasted as heat.
Calculate the efficiency of the motor as a percentage. (3 marks)
3 marks · take your time before peeking.
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Generated by TopMyGrade AI · cross-check official sources before relying on the mark-scheme phrasing.