Power
Physics: Edexcel IGCSE, topic 4.1.12
Power
Power is the rate of energy transfer (or work done). The faster that energy is transferred (or work is done), the higher the power. The power (measured in watts) is equal to the work done (in joules) divided by the time (in seconds).
Speakers
- The more powerful a set of speakers is, the more sound energy will be produced.
Lightbulbs
- The more powerful a lightbulb is, the more light energy will be produced.
Test yourself on Power
What is power the rate of?