falconquest,
After skimming through these many posts about a simple question, your answer has the best potential to answer the basic question asked by someone admits right up front that this isn't exactly his line of expertise. Thanks for that. The fact that some of the posts accurately describe current with the inclusion of OHMS law, or other related truth, does not help the person who is asking in the first place.
When working with customers, one goal is to connect with them on the level that they are at and not just spew out your vast knowledge, using terms, definitions, laws, ad infinitum about the product or subject. What seems easy to understand with a background for reference in physics or electronics, is not where most people are at.
In my case, don't even start with the basics of a tax form. Screw it, I give you the papers and pay you money for that. Explanation will often lead to even more confusion.