An electric crane has a very high power output. Which statement must be correct?
The crane must lift a very heavy load.
The crane must be connected to a very high voltage supply.
The crane must transfer a large amount of energy each second.
The crane must operate at a very high speed.
95 exam-style questions on CIE IGCSE Physics 1.7.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.