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Google 'Ohms Law'
AnswerOhm's Law has nothing whatsoever to do with power.
The fundamental equation for power in a d.c. system is: P = E I (where P = power, E = supply voltage, and I = load current). From this equation, two others can be derived: P = I2R and P = E2/R, where R = resistance.
For a.c. systems, the fundamental equation must be multiplied by the load's power factor (cosine of the phase angle).
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoPower (watts) is voltage times current.
Voltage is joules per coulomb. Current is coulombs per second. Multiply them together, and you get joules per second, which is also known as watts. Integrate that over time, and you get watt-seconds, or just plain joules. We also use the term kilowatt-hours; that is simply 3.6 million joules.
Of course, if the load is reactive, which it often is, the phase angle between voltage and current is non-zero, making apparent power (watts) not the same as true power (volt-amps, or VA). The ratio of watts over VA is Power Factor, and that is the cosine of the phase angle.
Wiki User
∙ 15y agoScroll down to related links and look at "Formulas and calculations - Electricity and Electric Charge".
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What is the application of generator and motors?
A generator converts mechanical power into electrical power. A motor converts electrical power into mechanical power.
What is mean electrical power triangle?
the electrical power triangle is as shown in the above pictiure
How do you transmit electrical power from power house to customers?
The power runs through electrical circuits that are mapped out by the city.
What is the unit of electrical power?
Watt
What is the power capacity of the electrical sub-station wherein the ocean adventure was connected?
can u give me unswer the ELECTRICAL POWER INSTALLATION?
What is the equation for energy transferred by an electrical appliance?
Energy = power x time. If power is in watts, and time in seconds, energy will be in joules.
What is a equation for electric energy?
electrical energy (in kWh) = electric power (in kWh) X time (in hours) E=Pt
What is the equation for wattage?
Wattage = voltage times amperage. That's for DC. For AC there is a power factor PF = cos phi you have do multiply with.AnswerThe above answer suggests that power ('wattage') is an electrical unit, which it is not. In fact, power is defined as the rate of doing work, so the basic equation is work divided by time.
What is the chemical equation for power?
Power hasn't a chemical equation.
What Electrical motors convert what power to what power to power?
Electrical motors convert electrical energy into mechanical energy.
How much amp is in a dc voltage?
There are no amps in a voltage because they are quite different electrical units. They are related by the 'power equation' which is: watts = amps times volts
How many watts are in 600 volts?
You are confusing electrical potential (Volts) and power (Watts). The equation for power (watts) is P = VI where V is volts (a measure of electrical "pressure") and I is current in amperes (the rate of flow of electricity). If the system is 120V and the power used is 600W then the current used is 5A. If the system is 240V and the power used is 600W then the current used is 2.5A.
What is the equation 2 to the power of 4?
2 to the power of 4 is an expression, it is not an equation.
What is mean electrical power triangle?
the electrical power triangle is as shown in the above pictiure
How much electrical power can be provided by coal?
how much electrical power can be provided by coal
What is electrical power transmission?
Moving electrical power from generating point to use point.
What is the application of generator and motors?
A generator converts mechanical power into electrical power. A motor converts electrical power into mechanical power.
