Electricity

• The directional movement of free electrons

 Voltage:

• The force that causes electrons to move is called voltage
• The ability of a charge to do work is called its potential
• The greater the difference is referred to a electromotive force or voltage
• The symbol E is used to represent EMF or voltage

Coulomb:

• Electric charge is measured in coulombs
• One coulomb is 6.25 x 1018

Current Flow:

• The directional movement of electrons is called current
• The unit if measurement for current is the AMPERE
• The AMPERE is defined as one coulomb per second
• One AMPERE is flowing is conductor when 6.25 x 10(18) electrons flow past a given point in one second
• The symbol I is used to represent the ampere of current flow

AC:

• Alternating current flow, electron flow is constantly reversed

DC:

• Direct current flow, electron flow in one direction
  
  

Voltage: Is a measure o potential difference (a force)

EMF: Electromotive force

 

Conventional current flow = positive to negative

Electron theory current flow = negative to positive (new style)