Question
In the following diagram the work done in moving a point charge from point P to point A, B and C is respectively as 
then
The correct answer is:
When a positive charge is moved from one point to another in an electric of magnetic field, then under the influence of the field force acts on the particle and an external agent will have to do work against this force. But in the given case the charge moves under influence of no field, hence it does not experience any force therefore, no work is done.
Related Questions to study
Three charges 
and 
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be the potentials at points A, B and C respectively. Then
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. Rank the four regions according to the magnitude of -component of the electric field E within them, greatest first
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