I have done this problem over and over and keep getting the wrong answer. What is the electric potential a distance of 3.0E-15m away from a proton.(adsbygoogle = window.adsbygoogle || []).push({});

I used V=kQ/r and got 4.8E-25 V, and it says the answer is wrong.

The second part of the question asks what is the potential energy of a system that consists of 2 protons 3.0E-15m apart.

I used V=k(1.6*10E-19)^2/r and got 7.68E-44J and webassign told me it was wrong. Can anyone help

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# Homework Help: Help on electric potential problem

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