Simple Electric Potential/Field problem

[Defennder]

Homework Statement

Okay this is a simple first year physics question, but I couldn't find anything about it online. Using the simple equation for electric field/potential due to a point charge, what's the electric potential/field at the coordinates of the point charge itself?

Homework Equations

The Attempt at a Solution

I'm tempted take limits as r approaches 0, but that seems to imply it approaches infinity which appears absurd. Either that or it's undefined. Anyone?

 

[supratim1]

its undefined.

 

[Redbelly98]

its undefined.

You're two years too late.