Power

• Define power as the rate at which energy is transferred or the rate at which work is done.
• Recall and apply the equation relating power to energy transfer and time:

$P = \frac{E}{t}$

• Recall and apply the equation relating power to work done and time:

$P = \frac{W}{t}$

• State that an energy transfer of 1 joule per second is mathematically equivalent to a power of 1 watt.
• Provide practical examples that clearly illustrate the definition of power, such as comparing two electric motors that lift an identical weight through the same height but at different speeds.