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- Displacement Current Calculator
- Current In A Rl Circuit Calculator
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- Potential Difference In Rc Circuit Calculator
- Ohms Law Calculator

The Electric Power and Efficiency Calculator will calculate the:

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 × ∆VP _{o} = × P _{o} = |

P_{i} = I × εP _{i} = × P _{i} = |

e = × 100%∆V/εe = × 100%∆V/εe = |

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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P_{o} = I × ∆V

P_{i} = I × ε

e = *∆V**/**ε* × 100%

This formula derives from

e = *P*_{o}*/**P*_{i} × 100% = *I × ∆V**/**I × ε* × 100% = *∆V**/**ε* × 100%

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.

- 15.1 - Electric Current. Current Density
- 15.2 - Electric Resistance. Combinations of Resistors
- 15.3 - Electric Potential Difference (Voltage). Ohm's Law
- 15.4 - Electric Circuits. Series and Parallel Circuits. Short Circuits
- 15.5 - Kirchhoff Laws
- 15.6 - Electric Power and Efficiency
- 15.7 - RC Circuits
- 15.8 - Miscellaneous

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