In a coal-fired power station, energy is stored in the coal. This energy is then transferred in stages to another useful form, which is the main output of the power station.
Which row in the table correctly identifies the form of stored energy in the coal and the main useful output energy of the power station?
| Stored energy in fuel | Main useful output energy | |
|---|---|---|
| A | chemical | thermal |
| B | chemical | electrical |
| C | thermal | electrical |
| D | electrical | chemical |
Row A
Row B
Row C
Row D
533 exam-style questions on CIE IGCSE Physics 1.7 Energy, work and power, covering 1.7.1a Energy stores and energy transfers, 1.7.1b Conservation of energy, 1.7.1c Kinetic and gravitational potential energy, 1.7.2 Work done, 1.7.3 Energy resources, 1.7.3a Energy resources and electricity generation, 1.7.3b Nuclear fusion as an energy source, 1.7.3c Efficiency of energy transfer, and 1.7.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.