Power

The energy (E) transferred or converted per unit time.

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

Unit: watt (W) = joule (J) / seconds (s)

Forms

Mechanical Power

Product of force (F) applied to an object and its velocity (v).

P = F \cdot v

Electrical Power

Product of voltage (V) and current (I).

P = V I = I^{2} R = \frac{V^{2}}{R}