I was looking up the difference of the speed of electricity versus the speed of light online and I found that the speed of electricity can approach (up to 90% of) the speed of light at 186,000 miles per second or approximately 300,000 kilometers per second. But, the comparison that I saw was with light traveling in a vacuum versus electricity traveling via a medium such as a cable. So, my question is what would be the speed of electricity in an absolute vacuum? Please help me understand.
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Remember that light is made of photons with no mass, so by definition they travel at the speed of light in a vacuum.
Electricity is electrons flowing through a wire, electrons do have mass, so they cannot ever travel at the speed of light, even in a vacuum.
The question "how fast do electrons travel in a vacuum" is like asking how long is a piece of string, it just depends how much you accelerate it, the only catch is that it must always be less than the speed of light.
Charlie
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