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glows but after a little start
up time, stays at a constant
We want to understand
what’s going on here. Physics 122 Electrical Current
This effect will involve large amounts of
charge particles moving together. This motion
of charges is called electrical current.
Need to quantify the motion of charges
Usually we’ll be concerned with charges
moving inside a material
– Need to understand how that works Physics 122 Dr. Nick Cummings 2 Physics 142 7/26/2011 Moving Charges
in a Neutral Conductor
What happens if we arrange charges to put an electric
force on a neutral conductor?
– Positive ions are fixed in a lattice
– Some negative charges (shared electrons) are free to move Physics 122 Conductivity in a metal is complicated –
and involves the quantum nature...
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This note was uploaded on 10/03/2011 for the course BSCI 410 taught by Professor Staff during the Spring '08 term at Maryland.
- Spring '08