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Question about Electric Field Strength and Electric Potential

  • Thread starter Steven7
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Lets say I have a point charge X placed on a region between a +Q test charge and +2Q point charge where electric field strength is zero. Since E=-dV/dR, does it mean V=0 or constant? Can the point charge move if i place it there? Well lets just ignore gravitational field/force here.
 

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Doc Al
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Since E=-dV/dR, does it mean V=0 or constant?
No, V ≠ 0. But the rate of change of V with respect to R is zero. That means the potential is a minimum at that point.
Can the point charge move if i place it there?
Why would it move? Is there a force on it?
 

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