0
Power is the rate at which work is done. Power is defined electrically as current times voltage.
There are different types of energy, such as potential energy (or voltage). Just because the energy is there, doesn't mean work is being performed.
AnswerPower is the rate at which work is done or the rate of heat transfer, expressed in watts, which is a special name give to a joule per second.
Work describes energy in transit between one form and another -e.g. a motor does work when it converts electrical energy into kinetic energy.
Heat describes energy in transit between a warmer body to a cooler body.
Work, heat, and energy are all expressed in joules.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
The speed at which an electrical current can do work is measured in which unit?
The rate at which work IS being done - or at which it would be done if you switched on an electrical appliance or some other piece of electrical equipment - is called 'power' and it is measured in watts.
How do you find out the amount of joules?
Where? And in what context?The joule is the metric unit of energy and work. If you multiply a force (in newtons) by the distance (in inches) through which that force is applied, you can calculate the amount of work in joules that has been done. But there are others ways to calculate energy or work. For example, the amount of electrical energy stored a capacitor is given by the expression E = [1/2]CV2, where C is the capacitance in farads and V is the voltage in volts. The result is in joules.
What are some similarities between work and energy?
they are measured in the same unit,joules
What is the relationship between heat and water?
The process of changing one form of energy into another form of energy is called work (symbol: W). For example, when an electric motor changes electric energy into kinetic energy, it is doing work.Heat (symbol: Q) describes energy in transit (i.e. the flow of energy) from a warmer body to a cooler body.So, for example, when an electric kettle is switched on, electrical energy is converted into the internal energy of the water (and of the kettle itself) -in other words, work(W) is being done to the kettle. As the internal energy* of the water and the kettle increases, its temperature rises above the abient (surrounding) temperature, so energy is then lost from the kettle to its surroundings by heat(Q) transfer. So, the change in the water/kettle's internal energy is the difference between the work done on the kettle, and the heat transfer away from the kettle. To summarise:change in internal energy = W - QSo, we can say that a change in internal energy is the difference between work and heat. And this is the relationship between work and heat.(*'Internal energy' is the sum total of the various energies associated with the vibration of the molecules of any body. All bodies have internal energy. Lower internal energy is associated with lower temperatures, and higher internal energy is associated with higher temperatures.)
What is the youth employment rate in Canada?
The youth employment rate in Canada is roughly 1 in 8 Canadians that are not in either work or school. The youth unemployment rate in Canada has been on the rise.
Is energy is the rate which work is done?
No it is not. Power is the rate at which work is done. Energy is another name for the total amount of work done. It may be thought of as power multiplied by time.
What is the rate at which work is done or energy is used is referred to?
Power.
What is the rate in which work is done?
Work rate is a measure of how quickly work is being completed, typically expressed in units of work per unit of time (e.g. tasks per hour). It indicates the efficiency or speed at which a task or project is being accomplished. A higher work rate implies a faster completion time, while a lower work rate indicates a slower pace.
What is the rate at which work is done?
Work is energy, measured in joules. The rate of work, or joules per second, is known as watts, or power.
The rate at which work is done is called energy True Or False?
False.
What is the rate at which what is done?
Work is energy, measured in joules. The rate of work, or joules per second, is known as watts, or power.
What is an example of the physics definition of power?
Power is the rate of work done or rate of energy generated or expended
How work is related to powerand energy?
Power is the rate at which work is done. That isPower = Work/Time.Work done is also the change in the total mechanical energy of a system between its initial and final state.Work = Final Energy - Initial Energy
What is measured in watts or kilowatts?
The rate at which work is done, or energy is transferred or dissipated.
What is the scientific definition of power?
Power is the rate at which work is performed or energy is converted. It is energy per unit of time. Power is work/time and it is measured in watts.
What does the word power mean in science?
Power is defined as the rate at which energy is used, generated, moved, or converted.Power is the rate of speed at which work is accomplished.
What term is used to express the rate at which work is done?
efficiency. Energy output is horsepower
