What is the formula for electric power? A. P = IV B. P = VI C. P = VR D. P = IR 相关知识点: 试题来源: 解析 B。解析:文章中明确提到“The formula for electric power is P = VI, where P is power, V is voltage, and I is current.”。
When line to zero voltage (VL-0) is used in the formula, multiply the single phase power by 3. Real power Real or true power is the power that is used to do the work on the load. P=VrmsIrmscosφ Pis the real power in watts [W] ...
Current Formula 2 (Power and Voltage) The power transferred is the product of supply voltage and electric current. Thus, we get current equals the power divided by voltage. Mathematically, Where stands for amperes or amps (the units for electric current). Example As shown in the circuit below...
Understanding the electric power formula also gives users the foundation for grasping what real power means. That’s a crucial step toward understanding why the power factor, which relates to the ratio of real power to apparent power, is so important. It’s a best practice to first make sure...
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By performing some simple algebra it is possible to discover the very useful formulae:W=V2RW=V2R . . and . . W=I2 RW=I2 R Using these formulae it is simple to work out the power dissipated in the 62.5 ohm resistor when a voltage of 250 volts is placed across it...
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An all-electric car uses no petrol. The problem, however, is that car batteries (电池) need to be recharged (再充电). That makes electric cars not so useful for long 63. journeys. Many people are not 64. pleased with it. The government and car makers are 65. working together to deve...
When the electron flow of electrical energy is channeled through a conductor, like a wire, it becomes electricity.This movement of an electric charge iscalled an electric current(and is measured in Watts). These currents, completed throughelectrical circuits, can power our TVs, stovetops, and mu...
[translate] ahis force is of electric nature,and the attraction between electrons of one atom to the nucleus of another atom contribute to what is known as chemical bonds. 他的力量是电自然,并且吸引力在一个原子之间电子对另一个原子中坚力量对什么贡献通认作为化学键。 [translate] ...