Power

By: David Okeke Rob Murrian Brandon Mast **//__Vocabulary:__//**
 * //__ Chapter 7: Power __//**

__Joule__- A unit of energy. One joule will cause one ampere of current to move across a resistance of one ohm when one volt is applied __Work__- The product of a force applied to an object, and the distance the object is moved. Electrically, when electrons are forced to move from a negative to a positive terminal, work is done __Power__- The rate at which work is done in an electrical circuit, or the amount of work done in a specific length of time. The symbol for power is “P”, and is measured in watts. __Watt__- The unit of measurement for power. __Dissipation__- The power is released within a circuit, usually in the form of heat. //**__ Power dissapation: __**//

In most electronic components power is dissapated in the form of heat. This is desired in some devices such as a toaster. All power is supported by the power source. Since this is the case power costs money. So most circuits are designed so that there is a minimum amount of power used in circuits. There is a relationship between power and resistance because power is the result of forcing current through resistance.

P=IE P=I2R I=P/E P=E2/R E=P/I
 * //__ Equations for Power __//**