Hi everyone! I've been learning about electric potential energy and electric potential and from what I've read, it seems that this is completely location based and it requires more than one charge/collection of charges. This makes sense because the equation for electric force requires two charges and the distance between them. But then I read that a balloon can have 5000 volts. 5000 volts relative to what? How can you calculate the voltage when there is only one charged object. I also heard that the ground was involved in this but wouldn't that mean the voltage increases and decreases depending on its distance from the ground? I'm so confused at this point, can you please respond in great detail? Thanks a lot!