Podcasts > Kategorie: Wissen und Wissenschaft > Kanal: BrainStuff

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

Kategorie: Wissen und Wissenschaft
Kanal: BrainStuff
Datum: 20. Mai 2015, 22:23
Stufe: B1-B2 (Mittelstufe)

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When you look at a normal 120-volt outlet in the United States, there are two vertical slots and then a round hole centered below. Take a look at this HowStuffWorks article to learn why appliance cords are shaped this way. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers