Electric Power and Efficiency Calculator

The Electric Power and Efficiency Calculator will calculate the:

Electric Power and Efficiency Calculator
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Calculator Precision (Decimal Places)
Electromotive force of battery (ε) V
Current flowing in the main branch of the circuit (I) A
Potential difference across the circuit component (ΔV) V

Electric Power and Efficiency Calculator Results (detailed calculations and formula below)

The output power delivered by a circuit component is W [Watt]
The input (total) power of the circuit delivered by the battery is W [Watt]
The efficiency of the electric circuit is % [Percent]
P_o = I × ∆V P_o = × P_o =

P_i = I × ε P_i = × P_i =

e = ∆V/ε × 100% e = ∆V/ε × 100% e =
Electric Power And Efficiency Calculator Input Values
Electromotive force of battery (ε) V [Volt]
Current flowing in the main branch of the circuit (I) A [Amp]
Potential difference across the circuit component (ΔV) V [Volt]

Please note that the formula for each calculation along with detailed calculations are available below. As you enter the specific factors of each electric power and efficiency calculation, the Electric Power And Efficiency Calculator will automatically calculate the results and update the Physics formula elements with each element of the electric power and efficiency calculation. You can then email or print this electric power and efficiency calculation as required for later use.

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Discover Physics with free Physics Revision Notes and Physics Calculator: Electric Power And Efficiency. This image shows the properties and electric power and efficiency formula for the Electric Power And Efficiency. The Electric Power and Efficiency Calculator will calculate the Output (useful) power delivered by a circuit component, the Input (total) power delivered by the electric source of the circuit (battery) and the Efficiency of the electric circuit

Useful power delivered by the circuit component Formula and Calculation

P_o = I × ∆V

Input power of the circuit Formula and Calculation

P_i = I × ε

Efficiency of the circuit Formula and Calculation

e = ∆V/ε × 100%

This formula derives from

e = P_o/P_i × 100% = I × ∆V/I × ε × 100% = ∆V/ε × 100%

Electrodynamics Physics Tutorials associated with the Electric Power And Efficiency Calculator

The following Physics tutorials are provided within the Electrodynamics section of our Free Physics Tutorials. Each Electrodynamics tutorial includes detailed Electrodynamics formula and example of how to calculate and resolve specific Electrodynamics questions and problems. At the end of each Electrodynamics tutorial you will find Electrodynamics revision questions with a hidden answer that reveals when clicked. This allows you to learn about Electrodynamics and test your knowledge of Physics by answering the test questions on Electrodynamics.

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