Created By : Naaz Fatima

Reviewed By : Phani Ponnapalli

Last Updated : May 08, 2023

Power Calculator created by us is a simple and easy to use tool designed by us which you can use to determine the power factor given voltage, current. All you need to do is provide the respective inputs in the allotted input sections and choose their units and then click on the calculate button to avail the output in no time.

Power Factor

What is Electrical Power?

Electrical power, like mechanical power, is defined as the quantity of work done in a given amount of time. An electric current does work in electrical circuits. The voltage V is determined by the "number of employees accessible in a unit of time" - the current I - and the energy of "a single worker." The power in a DC circuit is supplied by the battery.

P = I * V, where I = current measure in amperes, V = voltage and P = power measured in watts.

The equation in AC circuits is P = I * V * PF, where PF is the Power Factor

What is Power Factor?

Both the current and the voltage of AC currents alter on a regular basis. The root means square (RMS) is represented by the letters I or V. (RMS). The square root of the mean of squares of numbers is the RMS. The RMS voltage is the frequently used term for the voltage of electrical outlets (230 V in the EU and Australia, 110 V in the US and Canada, and 100 V in Japan).

The current and voltage in AC circuits may not be in phase. The maximum value of the current may precede or follow the maximum value of the voltage. As a result, the power transfer is less effective. The transmitted power is 0 in the worst situation when the current and voltage is completely out of sync.

The power factor indicates how well current and voltage are coordinated. The power factor is 1 if they're in sync. Otherwise, it is less than one, and in the case of total out-of-sync, it is zero. The power factor varies by device. The power factor of a completely resistive device, such as an electric kettle or an electric heater, is 1. Current and voltage are out of phase in a device containing inductive or capacitive elements. As a result, the power factor is less than one.

For more concepts check out to get quick answers by using this free tool.

Electrical Power Calculator

You must specify the current, voltage, and power factor in order to calculate the electrical power. The voltage of devices connected to electrical outlets is the same as the voltage of household electricity. The current drawn by the gadget is usually shown on the plug or on the device itself. Unless you have a Power Quality Analyzer on hand, finding the power factor is a little more difficult. Check out the power factors of a few common household items on this list

  • PF = 1 for normal bulbs,
  • PF = 0.93 for fluorescent bulbs
  • PF = 0.73 for common induction motors at half load
  • PF = 0.85 for full load
  • PF = 1.0 for electric ovens with resistive heating elements
  • PF = 0.85 for inductive ovens.

Take these values with a grain of salt because the exact value of the power factor is dependent on the details of the build.

FAQs on Power Calculator

1. What formula do you use to calculate power?

Work divided by time equals power.

2. In a calculator, what does twin power mean?

The term "twin power" refers to the fact that the calculator is fueled by two different power sources in order to save battery life. The calculator receives electricity from its solar cell battery when there is enough light. The usual batteries are used when the calculator is in low light situations.

3. How can you find out how much power is in a circuit?

P = IV or P=V2R where V represents the voltage drop across the resistor can also be used to compute power (not the full voltage of the source). The results will be the same.

4. What is the relationship between power, voltage, and current?

The rate at which energy (Upstart text, U, end text) is changed or transported through time is defined as power. Power is measured in joules per second, often known as watts. Electric power is the product of voltage and current.