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The electric dipole potential is

[tex] V (\textbf{r}) = \frac{1}{4\pi\epsilon_o} \frac{\textbf{p}\bullet \hat{r} }{r^2}[/tex]

I am trying to figure out the algebra in my book. How do you evaluate the scalar product of the dipole moment and the unit vector in the above equation?

I get [tex]qd cos \theta[/tex] but i am not sure if that is right.

Thank you

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# Electric dipole

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