Physics · May / June 2020 · Paper 12 · Question 19

The main stages in the operation of a coal-fired power station are listed. They are not in the correct order. 1 The turbine turns a generator. 2 Water in the boiler becomes hot. 3 Steam turns a turbine. 4 Burning coal produces thermal energy. 5 Electromagnetic induction produces electrical energy. 6 Steam is produced. The flow chart shows the first two stages. 4 → 2 → □ → □ → □ → □ What is the correct order for the remaining stages?

1. A6 → 3 → 1 → 5
2. B6 → 1 → 3 → 5
3. C1 → 6 → 3 → 5
4. D6 → 3 → 5 → 1

As printed in the paper