# 110411 - Physics 122 Physics 122 1 Physics 122 2 General...

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Physics 122 4/11/11 Prof. E. F. Redish 1 4/11/11 1 Physics 122 4/11/11 2 Physics 122 4/11/11 5 Physics 122 Δ U E = ± F E ⋅Δ ± r (small step) Δ U E = ± F E ± r (29 (lots of little steps) Δ U E = ± F E d ± r start finish General case Simplest case (one source charge, one test charge) Δ U E = ± F E d ± r start finish = k C qQ r 2 dr r i r f = k C qQ dr r 2 r i r f = k C qQ 1 r i 1 r f U E ( r ) = k C qQ r NOT A VECTOR – JUST A NUMBER

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Physics 122 4/11/11 Prof. E. F. Redish 2 4/11/11 6 Physics 122 Field Δ U E = ± F ⋅Δ ± r = work done moving charge against field U pt. ch. q in field of pt. ch. Q = k C qQ r PE
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## This note was uploaded on 12/28/2011 for the course PHYSICS 122 taught by Professor Bhagat during the Fall '11 term at Maryland.

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110411 - Physics 122 Physics 122 1 Physics 122 2 General...

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