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Why Do Electrical Prongs Have Holes in Them?

If you unplug any appliance in your house, there's a 98 percent chance that the two flat prongs have holes in them. Why is that? We get to the bottom of this and other curious questions about the appliances in your home.

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Why Do Electrical Prongs Have Holes in Them?
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    Why Do Electrical Prongs Have Holes in Them?

    Why Do Electrical Prongs Have Holes in Them?

    If you unplug any appliance in your house, there's a 98 percent chance that the two flat prongs on the electrical plug have holes in them. These …

    Curious Questions About Other Home Appliances

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