prompt+2

Sometimes it is hard for atoms to allow electrons to flow through easily. The atomic structure of an atom determines whether or not it will allow electrons to flow easily. If an atom doesn't have a full electron shell then it will look to give electrons away. These electrons that are given away are called free electrons and this is allowing them to flow freely. Atoms with a full electron shell will not have these free electrons and will not allow them to flow freely. In order for electricity to flow, there must be a difference in electric charge on opposite ends of the conductor.



Voltage is a pressure that pushes the electrons which is measured in Volts (V). Current is the flow of electric charges and is measured in Amps or (A). Resistance is the resistance that the conductor offers to the flow of charge and is measured in Ohms. The electricity in a circuit flows in a circle and goes in one way and comes out the other.

Any path that electrons can follow is called a circuit. Series circuits are when circuits are connected in a series and they form a single pathway for the electron to flow. Parallel circuits are when they form branches and each of the electrons follows a different path.