I have a few questions about how a series circuit works. I've attached a picture of a series circuit on this post. First of all I'm a little bit confused about voltage. If I'm correct, voltage is electrical potential. For example there is a voltage between two electrons being pushed close together. How is this also true for a battery? The positive end of a battery doesn't actually have an electric field associated with it, and the same applies to the negative end. Is it the chemical energy in the battery that somehow creates a potential difference? Also how do resistors work? What is it that allows them to slow down current? Finally what is voltage drop and why does it occur?