Home / Series / BrainStuff (Podcast) / Aired Order / Season 2015 / Episode 45

Why do the plugs on some appliances have two prongs and others have three?

English
  • Originally Aired May 20, 2015
  • Runtime 10 minutes
  • Content Rating United States of America TV-G
  • Created July 7, 2019 by
    Administrator admin
  • Modified July 7, 2019 by
    Administrator admin