1. The problem statement, all variables and given/known data Ampere's Law uses the current enclosed in a: A) Loop B) Surface C) Volume 2. Relevant equations 3. The attempt at a solution I think the answer is C because I often see current in 3-dimensions, that is, it can be into or out of the page as well as up/down and left/right. I don't know for sure, but is my thinking correct?