week3 (dragged) 46

week3 (dragged) 46 - ! We can then write a simpler...

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August 12, 2010 3 Electric Potential Energy (2) ! Like gravitational or mechanical potential energy, we must define a reference point from which to define the electric potential energy ! Typically, the electric potential energy is defined to be zero when all charges are infinitely far apart
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Unformatted text preview: ! We can then write a simpler definition of the electric potential taking the initial potential energy to be zero, ! The negative sign on the work: If E does positive work then U < 0 If E does negative work then U > 0 Thursday, September 9, 2010...
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