AC & DC current

• What does AC stand for?

  Alternating Current
• What does DC stand for?

  Direct current
• What is an alternating current caused by?

  An alternating potential difference
• What is a direct current caused by?

  A direct potential difference
• Name one difference between the alternating current and the direct current

  Alternating current - direction of current/charge is constantly swapping back and forth

  Direct current - current/charge is always flowing in the same direction
• What are oscilloscopes?


  Electronic devices which display how voltage changes with time
• Where can direct currents to be found?

  Direct currents can be found in/supplied by cells or batteries
• Name 2 examples where a direct current may be used.

  direct current may be used in phones or calculators
• Name the amount of Hz and Voltage contained in all main supplies in the UK

  50Hz

  230v or 240v
• Name some electrical supplies

  Kettles

  Plugs

  Microwaves
• In an alternating current, the current will…


  Fluctuate at the same rate