key term - Ampere (A)

Definition

An ampere is the unit used to measure electric current. One ampere represents one coulomb of charge passing through a point in one second.

Related terms

Voltage (V): The potential difference between two points in an electrical circuit.

Ohm's Law:

States that the current flowing through a conductor is directly proportional to the voltage across it and inversely proportional to its resistance.

Circuit Breaker: A safety device that automatically interrupts or breaks an electrical circuit when excessive current flows through it.