Explain to me why child safety plugs do not melt or catch fire when you plug them in the outlet?
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The amount of heat created by electricity depends on the amount of current flowing.
The amount of current in turn depends on the voltage and resistance. Current is equal to voltage divided by resistance.
The plastic that these child safety plug are made of has an extremely high resistance, in the order of many billions, or even billions of billions of Ohms. That means the current that flows through it almost zero.
And the current being almost zero consequently means the hest is almost zero.
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