If electricity is faster than the speed of sound why does it not make a sonic boom?
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So first of all, the actual electron movement is fairly slow, only a few cm a second. The reason power travels through a cable really quickly is that if the first electron moving pushes the second forward pushes the third forward and so forth.
Just like when you take a stick, even if you move the stick slowly, the end opposite to the one you’re holding starts moving (almost) instantly as you move it.
Secondly, the electrons travel through copper wire not through air. The speed of sound in copper is several times higher than that in air.
Thirdly, a sonic boom is created through fluid dynamic effects, it simply doesn’t exist in solid materials.
Fourthly, something as small as an electron is not capable of creating the pressure interactions for a sonic boom
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