Power: Average power in kinetic and gravitational potential energy situations, and household kilowatt-hour costs

What this note covers

1. Where power sits in Criterion 6, and what the course does and does not ask
2. The definition: power as the rate of energy transfer
3. Power in gravitational potential energy situations
4. Power in kinetic energy situations
5. Household power, the kilowatt-hour, and where the joule went
6. Cost calculations, and multi-appliance problems
7. Multi-step problems: where power meets conservation of energy
8. How Section C examines this — and what separates a top answer

8 sections · 12 key terms & formulas · 6 common mistakes