It's me again..
I solved this question but i want to be sure about it,so what do you think about my solution bellow?
a dipole consists of a positive charge q at x=d/2 and a negative charge -q at x=-d/2 (d is the distance between the charges). What is the potential produced by the dipole at a point distance y from the center of the dipole(on an axis forming 90 degrees with the dipole)?
for a dipole :
The Attempt at a Solution
so here we have this figure
teta is equal to 90 no? cos(90)=0
si V=k.q.d.cos(teta)/y^2--->=0 because cos90=0
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