# What unit measures the amount of electrical energy?

The official unit to measure energy is joules, which is equal to watt-seconds. However, power companies charge you for electrical energy in kWh; one kilowatt-hour = 3.6 million joules.

### Difference between kw and kwh?

KW is the unit power KWh is the unit of electrical energy KW or Watt defines the rating or power of a electrical equipment. For ex: motors, heaters etc. KWh is a measurement that how much energy is been consumed by the electrical equipments. Generally, operating 1KW rated equipment for an hour measures one KWh. Energy meters are the instruments for this purpose

### How many kWh in a MW?

A kWh is a kilowatt-hour, which is a unit of Energy or Work. Your utility company measures the amount of electrical energy you use each month in kilowatt-hours. A megawatt or MW is a unit of Power, which is the rate at which energy is used. Also a megawatt is 1000 kilowatts. Therefore, a kWh is one kW of power used for a full hour. A kWh is a MW of power used for 3.6…

### What is the unit of electrical measurement?

This question is not at all crystal clear to understand because there are so many different things which can be measured when considering electrical circuits and equipment! Please see the answer to the Related Question for more information. However, if you are asking about the unit to use for measuring an amount of electrical energy to be paid-for, many electric power utility companies charge their customers by 'The Unit'. The term 'The Unit' is short…

### How are energy and power different?

Energy is an amount of the ability to do work, or of the work done. It does not have a time element. Power is the rate of expenditure of energy, it is an amount of energy per second, or other unit of time. In the SI system, energy is measured in Joules and power in Watts. In the footpound system often used in the US, but superseded by SI in most other places, energy is…

### What is a lumen How does it relate to watts?

A lumen is a unit of luminous flux, which is the amount of light emitted per unit time. A watt is a unit of power (such as electrical power), which is the amount of energy consumed per unit time. Light bulbs have ratings in watts, which measures how much electricity they use, and lumens, which measures how much light they give off. For the same kind of bulb (incandescent, fluorescent, LED, etc.), a bulb with…

### How is the kilowatt hour used?

The kilowatt is a unit of power (energy / time); the kilowatt-hour is a unit of energy - the energy equivalent to the power of 1 kW, during one hour. The kilowatt-hour is equivalent to 3.6 x 106 Joule (a Joule is the same as a Watt-second). The kilowatt-hour is commonly used as a unit to charge for electrical energy. Note that you pay for electrical energy, not for electrical power.

### Which refers to the amount of energy as sound has?

As far as I know, the ENERGY is just called ENERGY. The unit is joules. Other related terms include: The sound energy is related to its AMPLITUDE, but the two are not the same. The POWER is the amount of energy per time unit. The unit is joules/second = watts. The intensity (unit: watts / square meter) is the amount of power that passes through each unit area (cross section).

### How do you calcualte 1unit of current consumption?

You are confusing energy and current. You consume, and pay for, energy -not current. For the purpose of billing its customers, an electricity utility measures energy in units called kilowatt hours. In the UK, a kilowatt hour is also called a 'unit', short for 'Board of Trade unit'. The Board of Trade, which no longer exists, used to be the government organisation responsible for setting energy prices. A unit, or kilowatt hour, of energy is…