: if you disconnect a power cable, where does the electricity that is still in the cable go?
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Electricity basically flows like water. If you have a hose full of water, and add a tiny bit at one end, a tiny bit comes out at the other end. The water that comes out, isn’t the same water that went in.
The same is true for wires. Put an electron in one end, and an electron comes out the other end. The electron that comes out isn’t the same one that went in.
Unplugging an extension cord, is like turning off the faucet of a hose. The water in the hose remains in the hose (ignoring the effects of gravity for this mind experiment). The same is true for wires. The electrons are all still in the wire and won’t move unless you add more electrons.
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