* Electric Current is Due to Electron Flow: In most circuits, the flow of electricity is actually caused by the movement of negatively charged electrons. These electrons move from a region of high potential to a region of low potential, much like a ball rolling downhill.
* Conventional Current Flow: Historically, before we understood the nature of electrons, scientists assumed that current flowed from positive to negative. This is called conventional current flow and is still used in many diagrams and calculations. It's important to remember that conventional current flow is just a concept, not the actual flow of charge.
* Positive and Negative Terminals: A battery or power source has a positive and negative terminal. The positive terminal is where conventional current is said to flow from, while the negative terminal is where it flows to. However, this is just a convention. Electrons actually flow from the negative terminal to the positive terminal.
So, to summarize:
* While there are positive charges (protons) within the atoms of the circuit's materials, they are not the primary carriers of current.
* The "positive charges" we talk about in circuits refer to the *conventional current flow* which is a useful concept for understanding circuit behavior, but not the actual flow of charge.
* The actual flow of charge in most circuits is due to the movement of electrons, which are negatively charged.
Let me know if you have more questions!
