Physics 201- Introduction to Electricity & Magnetism
September 23- Electrostatic Potentials

 

 

 

 
 

 

  Electrostatic potential energy and work

The diagram show a top view of a positively charged rod.  Points, A, B, C, and D lie in a plane near the center of the rod.  Points B and C and equidistant from the rod, as are points A and D.


What about the quantity "work done by the field/ charge of the particle"?  How does this compare for each of the cases?
 
 
 
 

Notice that this quantity (potential), unlike the work or potential energy, does not depend on the charge, only on the external electric field.
 

We now define a new unit
1 Volt= 1 J / C

Notice that this gives us a new combination of units for the elctric field: N / C = V / m
 
 
 

 

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Jeff Phillips
phillips@lmu.edu
Loyola Marymount University
Fall 2002