Electrical power is measured in?

Electrical power is measured in?

• A. Joules
• B. Amps
• C. Volts
• D. Watts

Answer: (D)

Power is the rate at which electrical energy is transferred or consumed, and its unit is the watt. A watt represents one joule of energy transferred every second, so watts describe how quickly energy is being used or produced. In circuits, power equals voltage times current (P = V × I for DC), which is why knowing both the driving voltage and the current tells you how much power a device uses. Joules measure energy, not rate, so they’re not the right unit for instantaneous power. Amps measure current, the amount of charge flowing, and volts measure the driving force that pushes that current. When talking about energy usage over time, we often refer to kilowatt-hours, which is a unit of energy, not instantaneous power.

Power is the rate at which electrical energy is transferred or consumed, and its unit is the watt. A watt represents one joule of energy transferred every second, so watts describe how quickly energy is being used or produced. In circuits, power equals voltage times current (P = V × I for DC), which is why knowing both the driving voltage and the current tells you how much power a device uses. Joules measure energy, not rate, so they’re not the right unit for instantaneous power. Amps measure current, the amount of charge flowing, and volts measure the driving force that pushes that current. When talking about energy usage over time, we often refer to kilowatt-hours, which is a unit of energy, not instantaneous power.