Define the term ‘potential energy’ of charge ‘q’ at a distance ‘r’ in an external electric field.
Potential energy of charge 'q' at a distance 'r' in an external field, is defined as the amount of work done in order to move a charge 'q' from infinity to a particular point in the presence of external field.
This work done, is stored in the form of potential energy.
P.E = q.V (r)
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