Let's consider a positive test charge q and a positive source charge qo
If we take direction of →r from qo to q, then potential energy of qo due to q will be:
P=kqoqr
However if we reverse the direction of →r from q to qo, will there be any change in the sign of potential energy? If yes/no , why?
Edit @Utkarshfutous and @ Demosthene:
P=−∫r∞→F.→dr=−kqqo∫r∞1r2drcosθ
Now,
if cosθ is negative when we take direction of →r from qo to q
then cosθ will be positive when we take direction of →r from q to qo
Thus the sign of potential changes. Is there something I am missing?
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