**Contents**show

## What are the 2 equations for electrical power?

Power Formula 2 – Mechanical power equation: **Power P = E ⁄ t** where power P is in watts, Power P = work / time (W ⁄ t).

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Electrical Measurement Definitions | ||
---|---|---|

Quantity | Name | Definition |

voltage V | volt (V)= W/A | kg·m²/A·s³ |

current I |
ampere (A) = Q/s |
A |

## What is the equation for electrical energy?

**Electrical Energy = Power x Time**. The total amount of electrical energy used depends on the total power used by all your electrical devices and the total time they are used in your home. One kilowatt hour is equal to 1000 watts of power used for one hour of time.

## What are the 2 parts of electricity?

Definitions. Electricity is the flow of electrical energy through conductive materials. An electrical circuit is made up of two elements: **a power source and components that convert the electrical energy** into other forms of energy. We build electrical circuits to do work, or to sense activity in the physical world.

## What are the 3 power equations?

**P = ΔV ^{2} / R**

We now have three equations for electrical power, with two derived from the first using the Ohm’s law equation. These equations are often used in problems involving the computation of power from known values of electric potential difference (ΔV), current (I), and resistance (R).

## What is V w Q?

**Electric potential difference** between two points in an electric circuit carrying some current is the work done to move a unit charge from one point to another. Thus, potential difference is the work done per unit charge and is given as V =W/Q.

## What are the parts of electric circuit?

An electric circuit has three parts: An energy source – like a battery or mains power. An energy receiver – like a lightbulb. **An energy pathway** – like a wire.

## What are the two types of circuit connection?

There are two basic ways in which to connect more than two circuit components: **series and parallel**.