# Energy vs. Power

The difference between energy and power is that energy is the ability of a body to do work while power is the rate at which specific work is done.

## Key Differences

Energy is a time component on the other hand power is an instantaneous quantity.
Energy can be stored for future use while power cannot be stored.
SI unit of energy is “Joule” while that of power is “Watt”.
Janet White
Nov 06, 2018
Energy is denoted by “W” while “P” is used as a symbol of
Janet White
Nov 06, 2018
Energy is the capacity of an object to do work while power is the rate at which work is performed.
Energy can change its form, but power cannot be transformed from one way to another.
Harlon Moss
Nov 06, 2018

## Comparison Chart

### .

The ability of a body to do work is called energy.
The rate of doing work is known as power.

W
P

### Representation

It represents the amount of work done.
It represents the speed of work done.

### SI Unit

Joules, i.e. watt/hour
Watt, i.e. joule per second

### Types

Energy has various kinds, i.e. thermal, kinetic, potential, light, sound, elastic and electromagnetic etc.
Power is divided into human, electric and optical power etc.

### Storage

Energy can be stored.
Power cannot be stored.

### Conversion

Energy is a convertible form.
Power cannot be converted from one form to another.

W= power × time
P= energy / time

### Quantity

It is a time quantity.
It is an instantaneous quantity.
Harlon Moss
Nov 06, 2018

## Energy and Power Definitions

#### Energy

The capacity for work or vigorous activity
Who has the energy to climb that trail?.

#### Power

The ability or capacity to act or do something effectively
Is it in your power to undo this injustice?.

#### Energy

Also energies Exertion of vigor or power
A project requiring a great deal of time and energy.
Devoted her energies to writing songs.

#### Power

Often powers A specific capacity, faculty, or aptitude
Her powers of concentration.

#### Energy

Vitality and intensity of expression
A speech delivered with energy and emotion.

#### Power

Physical strength or force exerted or capable of being exerted
The power of the waves.

#### Energy

(Informal) A nonphysical force or quality perceived as inhering in a particular place, person, or situation
Was turned off by the group's negative energy.

#### Power

Effectiveness at moving one's emotions or changing how one thinks
A novel of great power.

#### Energy

Usable heat or power
Each year Americans consume a high percentage of the world's energy.

#### Power

The ability or official capacity to exercise control; authority
How long has that party been in power?.

#### Energy

A source of usable power, such as petroleum or coal.

#### Power

The military strength or economic or political influence of a nation or other group
That country projects its power throughout the region.

#### Energy

The capacity of a physical system to do work.

#### Power

A country, nation, or other political unit having great influence or control over others
The western powers.

#### Energy

A form, amount, or level of this capacity
"a searing beam of 30 trillion protons, with energies up to 50 million electronvolts" (Science News).

#### Power

A supernatural being
The powers of evil.

#### Energy

The impetus behind all motion and all activity.

#### Power

Powers(Christianity) The sixth of the nine orders of angels in medieval angelology.

#### Energy

The capacity to do work.

#### Power

The energy or motive force by which a physical system or machine is operated
Turbines turned by steam power.
A sailing ship driven by wind power.

#### Energy

(physics) A quantity that denotes the ability to do work and is measured in a unit dimensioned in mass × distance²/time² (ML²/T²) or the equivalent.

#### Power

The capacity of a system or machine to operate
A vehicle that runs under its own power.

#### Energy

An intangible, modifiable force (often characterized as either 'positive' or 'negative') believed in some New Age religions to emanate from a person, place or thing and which is (or can be) preserved and transferred in human interactions; shared mood or group habit; a vibe, a feeling, an impression. aura.}}

#### Power

Electrical or mechanical energy, especially as used to assist or replace human energy.

#### Energy

The external actions and influences resulting from an entity’s internal nature (ousia) and by which it is made manifest, as opposed to that internal nature itself; the aspect of an entity that can affect the wider world and be apprehended by other beings.

#### Power

Electricity supplied to a home, building, or community
A storm that cut off power to the whole region.

#### Energy

A measure of how many actions a player or unit can take; in the fantasy genre often called magic points or mana.
Action points

#### Power

(Physics) The rate at which work is done, expressed as the amount of work per unit time and commonly measured in units such as the watt and horsepower.

#### Energy

Internal or inherent power; capacity of acting, operating, or producing an effect, whether exerted or not; as, men possessing energies may suffer them to lie inactive.
The great energies of nature are known to us only by their effects.

#### Power

The product of applied potential difference and current in a direct-current circuit.

#### Energy

Power efficiently and forcibly exerted; vigorous or effectual operation; as, the energy of a magistrate.

#### Power

The product of the effective values of the voltage and current with the cosine of the phase angle between current and voltage in an alternating-current circuit.

#### Energy

Strength of expression; force of utterance; power to impress the mind and arouse the feelings; life; spirit; - said of speech, language, words, style; as, a style full of energy.

See exponent.

#### Energy

Capacity for performing work.

#### Power

The number of elements in a finite set.

#### Energy

(physics) the capacity of a physical system to do work; the units of energy are joules or ergs;
Energy can take a wide variety of forms

#### Power

(Statistics) In a statistical test, the probability of correctly rejecting the null hypothesis when it is false.

#### Energy

An exertion of force;
He plays tennis with great energy

#### Power

A measure of the magnification of an optical instrument, such as a microscope or telescope.

#### Energy

Enterprising or ambitious drive;
Europeans often laugh at American energy

#### Power

Chiefly Upper Southern US A large number or amount. See Note at powerful.

#### Energy

An imaginative lively style (especially style of writing);
His writing conveys great energy

#### Power

(Archaic) An armed force.

#### Energy

A healthy capacity for vigorous activity;
Jogging works off my excess energy
He seemed full of vim and vigor

#### Power

Of or relating to political, social, or economic control
A power struggle.
A power base.

#### Energy

The federal department responsible for maintaining a national energy policy of the United States; created in 1977

#### Power

Operated with mechanical or electrical energy in place of bodily exertion
A power tool.
Power car windows.

#### Power

Of or relating to the generation or transmission of electricity
Power companies.
Power lines.

#### Power

(Informal) Of or relating to influential business or professional practices
A pinstriped suit with a power tie.
Met with high-level executives at a power breakfast.

#### Power

To supply with power, especially mechanical or electrical power.

#### Power

The ability to do or undergo something.

#### Power

(social) The ability to coerce, influence, or control.

#### Power

(countable) The ability to affect or influence.

#### Power

Control or coercion, particularly legal or political (jurisdiction).

#### Power

The people in charge of legal or political power, the government.

#### Power

(metonymically) An influential nation, company, or other such body.

#### Power

An army, a military force.

Effectiveness.

#### Power

Physical force or strength.
He needed a lot of power to hit the ball out of the stadium.

#### Power

Electricity or a supply of electricity.
After the pylons collapsed, this town was without power for a few days.

#### Power

A measure of the rate of doing work or transferring energy.

#### Power

The strength by which a lens or mirror magnifies an optical image.
We need a microscope with higher power.

#### Power

A large amount or number.

#### Power

Any of the elementary forms or parts of machines: three primary (the lever, inclined plane, and pulley) and three secondary (the wheel-and-axle, wedge, and screw).
The mechanical powers

#### Power

A measure of the effectiveness that a force producing a physical effect has over time. If linear, the quotient of: (force multiplied by the displacement of or in an object) ÷ time. If rotational, the quotient of: (force multiplied by the angle of displacement) ÷ time.

(mathematics)

#### Power

A product of equal factors (and generalizations of this notion): $x^n$, read as "$x$ to the power of $n$" or the like, is called a power and denotes the product $x \times x \times \cdots \times x$, where $x$ appears $n$ times in the product; $x$ is called the base and $n$ the exponent.

#### Power

(set theory) Cardinality.

#### Power

(statistics) The probability that a statistical test will reject the null hypothesis when the alternative hypothesis is true.

#### Power

In Christian angelology, an intermediate level of angels, ranked above archangels, but exact position varies by classification scheme.

#### Power

(transitive) To provide power for (a mechanical or electronic device).

#### Power

(transitive) To hit or kick something forcefully.

#### Power

To enable or provide the impetus for.

Impressive.

#### Power

Same as Poor, the fish.

#### Power

Ability to act, regarded as latent or inherent; the faculty of doing or performing something; capacity for action or performance; capability of producing an effect, whether physical or moral: potency; might; as, a man of great power; the power of capillary attraction; money gives power.

#### Power

Ability, regarded as put forth or exerted; strength, force, or energy in action; as, the power of steam in moving an engine; the power of truth, or of argument, in producing conviction; the power of enthusiasm.

#### Power

Capacity of undergoing or suffering; fitness to be acted upon; susceptibility; - called also passive power; as, great power of endurance.
Power, then, is active and passive; faculty is active power or capacity; capacity is passive power.

#### Power

The exercise of a faculty; the employment of strength; the exercise of any kind of control; influence; dominion; sway; command; government.
Power is no blessing in itself but when it is employed to protect the innocent.

#### Power

The agent exercising an ability to act; an individual invested with authority; an institution, or government, which exercises control; as, the great powers of Europe; hence, often, a superhuman agent; a spirit; a divinity.
And the powers of the heavens shall be shaken.

#### Power

A military or naval force; an army or navy; a great host.
Never such a power . . . Was levied in the body of a land.

#### Power

A large quantity; a great number; as, a power o good things.

#### Power

The rate at which mechanical energy is exerted or mechanical work performed, as by an engine or other machine, or an animal, working continuously; as, an engine of twenty horse power.

#### Power

A mechanical agent; that from which useful mechanical energy is derived; as, water power; steam power; hand power, etc.

#### Power

The product arising from the multiplication of a number into itself; as, a square is the second power, and a cube is third power, of a number.

#### Power

A machine acted upon by an animal, and serving as a motor to drive other machinery; as, a dog power.

#### Power

Mental or moral ability to act; one of the faculties which are possessed by the mind or soul; as, the power of thinking, reasoning, judging, willing, fearing, hoping, etc.
The guiltiness of my mind, the sudden surprise of my powers, drove the grossness . . . into a received belief.

#### Power

The degree to which a lens, mirror, or any optical instrument, magnifies; in the telescope, and usually in the microscope, the number of times it multiplies, or augments, the apparent diameter of an object; sometimes, in microscopes, the number of times it multiplies the apparent surface.

#### Power

An authority enabling a person to dispose of an interest vested either in himself or in another person; ownership by appointment.

#### Power

Hence, vested authority to act in a given case; as, the business was referred to a committee with power.

#### Power

Possession of controlling influence;
The deterrent power of nuclear weapons
The power of his love saved her
His powerfulness was concealed by a gentle facade

#### Power

(physics) the rate of doing work; measured in watts (= joules/second)

#### Power

Possession of the qualities (especially mental qualities) required to do something or get something done;
Danger heightened his powers of discrimination

#### Power

A state powerful enough to influence events throughout the world

#### Power

(of a government or government official) holding an office means being in power;
During his first year in office
During his first year in power
The power of the president

#### Power

One possessing or exercising power or influence or authority;
The mysterious presence of an evil power
May the force be with you
The forces of evil

#### Power

Physical strength

#### Power

A mathematical notation indicating the number of times a quantity is multiplied by itself

#### Power

A very wealthy or powerful businessman;
An oil baron

#### Power

Supply the force or power for the functioning of;
The gasoline powers the engines

### Energy vs. power

People often consider power and energy to be the same as synonyms, but it is not true. There is a fine line of difference exists between them. Energy is defined as the ability or potential of a body to perform work while power is the rate at which a specific task is performed. This is the crucial difference between them. Further differences will be discussed in detail in this article.

### What is Energy?

Energy is the capacity or potential of a body to perform some physical work or activity like singing, running, jumping, dancing etc. According to law of conservation of energy, it is stated that energy can neither be formed nor be ruined but it can only be changed from one form to another. An object which is doing work will lose its energy while the one on which work is being done will gain it. Heat energy, light energy, kinetic energy, potential energy, mechanical energy, sound energy, and nuclear energy etc. are different forms of energy. Energy is a time quantity and can also be stored for future use. There are two types of energy sources. One is renewable sources that can be replenished and other is non-renewable sources that cannot be replenished. Several instruments are used to measure energy, e.g. calorimeter (measures heat absorbed or released during any reaction), bolometer (measures the intensity of radiation) and thermometer (measures temperature) etc. It has various units like calories, ergs etc. but the SI unit of energy is joules, i.e. Watt per hour.

### What is Power?

The energy or work gained or spent per unit time is known as power. It is actually the capacity of an object to consume energy, i.e. an object which is using more energy per unit time is more potent than the one which is consuming less. Power cannot be changed from one form to another. It is an instantaneous quantity and cannot be stored. It has different kinds like human power, optical power and electric power etc. The SI unit of power is watt, i.e. joule per second. It measures the rate of transfer of energy.

#### Example

A car A which is travelling 12km in 10 minutes is more powerful as compared to a car B which is moving at a speed of 8km in 10 minutes.