Why is the electric field strength so small inside a current carrying a wire (10^-2) compared to other fields, such as close the earths surface (10^2), or needed to cause a spark in air (10^6) or inside cell membrane (10^7)?
Added by Marcos P.
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It is a measure of the force exerted on a charged particle in an electric field. The greater the electric field strength, the greater the force on the charged particle. Now, let's consider a current carrying wire. The electric field strength inside the wire is Show more…
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