What is the unit of electric current?

• A. Ampere (A)
• B. Volt (V)
• C. Ohm (Ω)
• D. Watt (W)

Answer: (A)

The unit of electric current is the Ampere, commonly abbreviated as A. Electric current refers to the flow of electric charge in a circuit. It is defined as the amount of charge that passes through a conductor over a specific period of time. One Ampere is equivalent to one coulomb of charge passing through a point in the circuit in one second.

This measurement is fundamental in electrical science because it helps in quantifying how much electricity is flowing through the components of an electrical system, which is crucial for the design and analysis of circuits.

The other units listed are related to different electrical properties: the Volt measures electrical potential difference, the Ohm measures electrical resistance, and the Watt measures power, which is the rate at which electrical energy is transferred. Understanding the distinct roles of these units is important in electrical science and helps in grasping the broader context of how electrical systems operate.