1.

Write an expression for potential at a point P `vec(( r))` due to two point charges `q_(1) and q_(2)` at `vec(r_(1)) and vec(r_(2))` respectivley.

Answer» `V vec((r )) = (q_(1))/(4pi in_(0) | vec(r ) - vec(r_(1)) |) + (q_(2))/(4pi in_(0) | vec(r ) - vec(r_(2)) |)`


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