Please help me wrap my head around this concept... I don't really need help on a problem in particular.(adsbygoogle = window.adsbygoogle || []).push({});

If we define electric potential V to be zero at r = infinity for a point charge, how can we determine the potential difference of a test charge that moves from infinity to a specific point near the point charge?

I guess my real problem is with the concept of infinity. It seems to me that bringing a test charge from infinity to a specified point would have some undetermined change in potential given the nature of infinity.

Maybe I'm making this harder than it really is...

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Electric Potential at Infinity

**Physics Forums | Science Articles, Homework Help, Discussion**