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Basic Terms Note sheet Digital Electronics Mr. Burton – Maury High School Blocks 7 & 8 • Voltage is what pushes an electrical charge or electrons) through a circuit. Also known as electrical potential. • Not to be confused with the electrical charge itself. • Voltage is measured in volts. • Remember when we learned about the electric chair? • Current is a flow of electric charge (the electrons) that are being moved through an electrical circuit. • Voltage is the force that moves current, and that is the difference between the two concepts that are always confused. • Current is measured in Amperes. • Is a quality of the opposition of current flow through an electrical conductor measured in OHMS. • An example of an electrical conductor can be • In other words resistance is a ratio between voltage and current which shows the quantity of current is being held back in a circuit. • Materials called super conductors do not have any resistance. • An electrical circuit in which the electrical loads (example: a lightbulb) are connected to a voltage source, along the same conduction path. • Expressed by the equation Vs = V1 + V2 …. • An electrical circuit in which the electrical loads (example: a lightbulb) are connected to a voltage source (example a battery) parallel to the voltage source with their own conduction path. • Expressed by the equation Vs = V1 = V2 …. • Know these for drawing an electrical circuit …..