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week4 (dragged) 36

# week4 (dragged) 36 - Because there is no electric field and...

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August 12, 2010 38 Electric Potential Energy for a Pair of Particles (1) ! To illustrate the concept of the electric potential energy of a system of particles we calculate the electric potential energy of a system of two point charges, q 1 and q 2 . ! We start our calculation with the two charges at infinity ! We then bring in point charge q 1
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Unformatted text preview: Because there is no electric field and no corresponding electric force, this action requires no work to be done on the charge ! Keeping this charge ( q 1 ) stationary, we bring the second point charge ( q 2 ) in from infinity to a distance r from q 1 • That requires work q 2 V 1 ( r ) Thursday, September 16, 2010...
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