What is the unit of ampere?

The unit of ampere is recognized as the standard unit of electric current in the International System of Units (SI). Current measures the flow of electric charge in a circuit, and the ampere quantifies this flow. One ampere represents the amount of electric charge (specifically one coulomb) passing through a conductor in one second.

In the context of electrical systems, understanding current is fundamental for operating and troubleshooting electrical equipment, including forklifts, where proper current management is essential to ensure safe and efficient operation. Other options such as voltage, resistance, and power are related electrical concepts but do not represent current. Voltage measures the potential difference that drives current, resistance quantifies how much a material opposes current flow, and power indicates the rate at which energy is used or produced in a circuit. Recognizing that the ampere specifically identifies current helps in understanding how various electrical systems function and interact.