Upon completion of this Module, you will know:

• What electricity is
  
• How electric current flows
  
• Ohm's Law
  
• What constitutes a complete electrical circuit
  
• Types of electricity
  
• Differences between single-phase and three-phase supplies
  
• How power and work differ
  
• How transformers operate
  
• how the current carrying capacity of conductors vary
  
• What power factor is
  
• What voltage drop is
  

To check your knowledge of this Module, please complete the review question and answer section, starting on page 15.