1st year of post-compulsory secondary education
Electrical phenomena
José Luis San Emeterio
 ELEC 
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3.3 Conclusions about potential electric energy
  • We call the work carried out by the electric field when the charge Q2 moves from a point to infinity potential energy of the charge Q2 at this point in the field created by Q1. Its value is determined by:
                                         
    where r is the distance between the charges.
  • Potential energy is positive when it corresponds to repulsion and negative when it corresponds to attraction.
  • When several charged particles interact with another one, the latter´s potential energy is the sum of the potential energies due to each of the other charges (principle of superposition). Click on next to continue

 

 
Electric force
What we already know
Coulomb's law
More than two charged particles
Conclusions
The concept of field intensity
Field intensity
Lines of force
Conclusions
Potential energy and potential
What are these magnitudes?
Superposition. Work in the field
Conclusions
Potential, field and movement of charged particles
Relation between field intensity and potential
Movement of charged particles
Conclusions
Evaluation