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Name: nick
Status: student
Grade: 9-12
Location: OH
Country: N/A
Date: 11/29/2005


Question:
What is the conductivity speed of electrons in a superconductor?


Replies:
It is a bit of a misconception that electrons move at the speed of electricity through a wire. Electricity moves move like a wave, with many electrons moving as a direct result of the movement of other nearby electrons. In a typical piece of copper wire, the Electrons themselves only reach speeds of about 2 cm per second, depending on the amount of current present.

In a super conductor, the electrons are "free", meaning they are not bound to their individual atoms or molecules. In this case, with a similar amount of current, the electrons would not move any faster than in a normal piece of wire. However, because of the ease of moving electricity through a super conductive wire, a much smaller piece of wire can be used. (Imagine if you could move all the water in a fire hose through a drinking straw!) Now the more limited number of electrons would have to move faster, though their actual physical speed is still a function of just how much current passes through the wire.

Ryan B.lscamper



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