Current

• Because insulators contain a packed outer shell 


  Insulators also have contain electrons, but why are they not conductors
• because of the amount of current running though it


  Why does a conductor that carries electric current become hot
• To switch off the source if the circuit fails


  A protective device is always connected to the positive conductor of the circuit, why
• transmission wires


  What is the term given to a closed path that current flows through
• • A source of energy
  • A load
  • A means of transmission 


  What is needed for a complete circuit
• I=Q/t


  How to measure electric current
• • I = Current in Amperes (A)
  • Q = Charge in coulombs (C)
  • t = Time in seconds (s)


  What does I=Q/t mean
• • I = Current

  • Q = Quantity of electricity (C)
  • t = Time (s)


  How to measure current flow