Electrical Power Calculator
If you want to evaluate the power utilized by an electrical device, then you can use this electrical power calculator.
The rate at which an electric circuit transfers electrical energy per unit of time is known as electrical power. It is similar to mechanical energy. In mathematical form, electrical power is defined as the product of voltage and current, where voltage is denoted by V and current is represented by me. The SI unit of power is a watt which is equivalent to 1 J/s.
Table of Contents
Formula of Electrical Power Calculator
To determine the electrical power of a device, you can use our calculator, or you can use the formula listed below:
P = I * V
Where,
I = current (A)
V = Voltage (V)
P = Power (W)
For an AC circuit, the equation used to find electrical power is listed below:
P = I * V * PF
Where,
PF = Power Factor
Note:
To calculate total work, you can use our Work Calculator.
Example
For a more precise understanding of concepts, let us have an example listed below:
Suppose a cell phone battery works at 12 V and supplies a current of 0.9A to make a call on it. What is the electrical power provided by a phone's battery?
Given data
Voltage = 12 V
Current = 0.9 A
To Find
Electric power of a battery = ?
Solution
To find out the power required from a battery, you can use the formula listed below:
P = I * V
Putting values in the formula:
P = 12 V * 0.9 A
P = 12 J/C * 0.9 C/s = 10.8 J/s
How to use the Electrical Power Calculator?
The steps to use the electrical power calculator are as follows:
Step 1: Enter the value of the current in the first required input.
Step 2: Enter the value of voltage in the second required input.
Step 3: The calculator will automatically display an answer on the screen.
Calculator use
Using our free and online electric power calculator, you can find the energy utility or required by an electrical device. Just enter the needed values in the above steps, and our calculator will display the most precise answer on the screen.
