Watt's Law

Watt's Law, sometimes called the Power Law, describes the relationship between power (PP), current (II), and voltage (VV):


Given tha values for any two variables, we solve for the third, so that:




Power and Watts

Power is measured in watts. One watt (WW) is equal to one joule (JJ) per second (ss), or W=JsW = \frac{J}{s}. Another way to put it is, a watt is the amount of electricity required to accelerate 1kg by 1 meter per second squared (a joule) over 1 second. In other words, a watt is "how much work can be done per second".

Video: Power, Work, and Energy

Full course on Khan Academy: Power)

Broader Topics Related to Watt's Law (Power Law)


Energy that results from charged particles

Power (Physics)

Energy that results from charged particles

Watt's Law (Power Law) Knowledge Graph