Running electricity over a cable always drops the voltage at the end, but a fat cable can help keep the loss down. This is why we have various thicknesses of extension cables and lengths. You might be able to run 15 feet with a thinner cable to power your table saw, but you need a thicker cable to run 50 feet so you’re not under voltage.
The same would apply to car chargers, which are pushing a lot more electricity than your 110V extension cord is. .
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