Power (Grade 12 NSC Matric Physical Sciences): Flashcards

Rate at which work is done or energy is transferred

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

$P$ in watts, $W$ in joules, $t$ in seconds

$P = F \times v$

Watt (W)

One joule per second

Approximately 750 watts

Energy is removed from the system

When force and velocity act in opposite directions

Maximum rate at which machine can do work