elektrivõimsus

Elektrivõimsus is the rate at which electrical energy is transferred by an electric circuit. It is a measure of how quickly electrical work is being done. The standard unit of electrical power is the watt (W), which is defined as one joule of energy per second.

In a direct current (DC) circuit, electrical power can be calculated by multiplying the voltage across a component by the current flowing through it. The formula for this is P = V * I, where P represents power, V represents voltage, and I represents current. In alternating current (AC) circuits, the calculation is slightly more complex due to the fluctuating nature of voltage and current. The instantaneous power varies, but the average power is often what is of practical interest.

Electrical power is a fundamental concept in physics and electrical engineering. It is used to describe the output of power generation sources like power plants, the consumption of electrical appliances, and the capacity of electrical transmission systems. For example, a light bulb might be rated at 60 watts, indicating that it consumes 60 joules of electrical energy every second when powered at its specified voltage. Understanding elektrivõimsus is crucial for designing and operating electrical systems efficiently and safely.