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What is the amount of electrical energy used in a certain amount of time?
Wiki User
∙ 13y ago
This is a measure of power. Power is the rate of use or production of energy. Usually it is defined as the amount of energy per second. Thus if energy is measured in Joules, then a rate of 1 Joule per second is a power of 1 watt.
If you are thinking of thermal energy, this will be in calories or BTU. There is no specific unit for calories/sec or BTU/sec, but they can be related to watts. 1 calorie/sec = 4.2 watts, 1 BTU/sec = 1.055 Kw
Wiki User
∙ 15y ago
Wiki User
∙ 13y agoJoules. One joule is one watt for one second. We commonly use kwh, or kilowatt-hours, that is simply 3.6 x 106 joules.
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What term describes the amount of electrical energy used in a certain amount of time?
kilowatthours
What terms describe the amount of electrical energy used in a certain amount of time?
kilowatthours
What happened to energy when an appliances is used for a longer time?
Typically, an electrical appliance uses electrical energy at a certain rate (a certain power, a certain amount of energy per second). The longer you keep it on, the more energy it will use in total. The relation is simply: energy = power x time Units might be joule, watt, and seconds; or kWh, kW, and seconds.
The amount of energy carried by a wave in a certain amount of time?
intensity
Efficiency of a machine is?
The amount of energy used in a certain amount of time and the expense.
Why is Hydroelectricity not worldwide?
availability is not everywhere. it can only produce a certain amount of energy at a time
What is the difference between power measurement and energy measurement?
Power and energy are closely related. Energy is a measure of the amount of work something has done or can do. It is measured in Joules in a laboratory, calories in certain other fields such as food and other units such as KWH for electrical supplies. As an example, a battery can provide a certain amount of energy which will be used up as the battery delivers a current to a circuit. Power is the amount of energy used or transferred in a certain amount of time so it is a measure of the rate of transfer of energy. It is measured in Watts. One Watt is equal to one Joule being used or transferred each second. Looking at the battery example once again, if the battery delivers energy at 3 joules every second, then its power output is 3W.
Does an electric generator motion produces magnetism or power or electricity?
An electric generator produces electrical energy. It converts mechanical energy to electrical energy by interacting with a magnetic field. The amount of electrical energy converted to useful work in a given time interval is the power output. If the generator is not connected to any load, then no work is done and there is no power.
How many Joules of electrical energy does a 100 Watt light bulb consume from the electrical supply in 2 seconds?
Watt means joules/second. It refers to the amount of energy a device uses, in this case. Multiply the power (in watts) by the time (in seconds) to get the energy (in joules).
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 in units of ft.lbforce or BTU, whilst power is in horsepower.In electrical engineering, power is in Watts or Kilowatts or Megawatts, to get an amount of energy over a period of time you generally introduce an hour as the unit, so that electrical energy is in kilowatt.hours, or other multiples depending on the application.
How much energy does uranium produce in a certain amount of time?
The energy produced by natural radioactive disintegration is small an important only at geological times scale.
What do you multiply to get electrical energy?
Electrical energy = (power) multiplied by (time) or (voltage across a component or circuit) times (current through it) times (time)
