arge at the origin (Fig 2 3) For definiteness, take Q wish to determine the potential at any - Physics - Electrostatic Potential And Capacitance

Question

arge at the origin (Fig 2 3) For definiteness, take Q wish to
determine the potential at any point P with position vector
r from the origin For that we must calculate the
work done in bringing a unit positive test charge from infinity to
the point P For Q > 0, the work done against the repulsive force
on the test charge is positive Since work done is independent of
the path, we choose a convenient path - along the radial direction
from

Anshu Agrawal · Accepted Answer

Dear student,
Work done against the force is always positive. As the test charge is a unit positive charge so the work done in bringing it closer to a positive charge, work needs to be done and so it will be positive.
Image result for negative and positive work done in electric field

Image result for negative and positive work done in electric field

Regards

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