Advanced Interactive Power Calculator
Theory & Formulas
Power (P) in physics is the rate at which work is done or energy is transferred. It quantifies how quickly energy is used or generated.
- The standard SI unit of power is the Watt (W), which is equivalent to one Joule per second (J/s).
Common formulas for calculating power include:
- Power from Work and Time: This is the fundamental definition of average power.
P = W / t
(Where P is power, W is work done, and t is the time taken.) - Power from Force and Velocity (Mechanical Power):
- When force and velocity are in the same direction: P = F × v
- When there's an angle θ between constant force and constant velocity: P = F × v × cos(θ)
(Where F is force, v is velocity, and θ is the angle between the force and velocity vectors.)
- Electrical Power:
- From Current and Voltage: P = I × V
- From Current and Resistance: P = I² × R
- From Voltage and Resistance: P = V² / R
How to Use:
- Select Formula: Choose the power calculation method from the "Select Power Calculation Method" dropdown.
- Enter Known Values: Input the required values for the selected formula in the fields that appear. Ensure you use standard SI units as indicated (e.g., Joules for Work, seconds for Time, Newtons for Force, m/s for Velocity, Amps for Current, Volts for Voltage, Ohms for Resistance).
- Calculate: Click the "Calculate Power" button.
- View Result: The calculated Power (in Watts), along with the formula used, will be displayed.
- Copy & Log: Use the "Copy Result" button and review the Action Log for input details and calculation steps.
Calculation Result:
Calculated Power (P):
-
Action Log:
Calculator initialized. Select a calculation method to begin.