Circuits- Stuff I don’t Understand?

Circuits- Stuff I don\’t Understand?

Hi, I have an exam coming up about Circuits + Electromagnets and there are these really annoying concepts that I don’t understand….

1. The difference between the conventional current and the actual flow of negative electrons- I mean, which do we actually use when the exam asks us to draw the flow of the current?

2. Why isn’t current used up in a circuit? I mean, if it wasn’t then wouldn’t circuits have an infinite source of power and we wouldn’t ever have to use more than one battery?

3. If you had a circuit with an ammeter (A1) then two bulbs, then another ammeter (A2), then you would expect the ammeter to have a lower reading because of resistance, but it doesn’t- why?

4. If you had two bulbs placed in a parallel circuit, and two bulbs placed in a series circuit, the bulbs in the parallel circuit would be brighter. (This is assuming that they have an equal amount of cells, of course). Why? Essentially, why are the ammeter readings higher for the parallel circuit and the series circuit when there are the same amount of bulbs?

5. What’s the difference between voltage (V) and current (A) and couloumb (C)?

6. If electrical charge always takes the easiest route (i.e. if there’s a short circuit it would go through that instead of the bulb), then why do parallel circuits work? I mean, the electrical charge would only be obligated to go through one of the parallel wires, but not all of them.

THANK YOU SO MUCH IN ADVANCE! MY TEXTBOOK doesn’t really help at all…