# Work, Energy and Power, Types of Energy, Basic Concepts, Definition (For CBSE, ICSE, IAS, NET, NRA 2022)

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# Work, Energy and Power

• Work, energy, and power are the most used terms in Physics.
• Work and energy can be considered as two sides of the same coin
• Work done is generally referred in relation to the force applied while energy is used in reference to other factors such as heat.
• Power is defined as work done per unit time.

## Work

 Definition Work is said to be done when a force applied to an object moves that object. Formula We can calculate work by multiplying the force by the movement of the object. Unit The SI unit of work is the joule (J) Details Work is said to be done when a body or object moves with the application of external force.

## Energy

 Definition In physics, we can define energy as the capacity to do work. Formula For the potential energy the formula is Unit The SI unit of energy is joules (J) , which is named in honour of James Prescott Joule. details Energy can neither be created nor destroyed. It can only be transformed from one kind to another.Energy is found in many things and thus there are different types of energy.All forms of energy are either kinetic or potential.The energy in motion is known as Kinetic Energy whereas Potential Energy is the energy stored in an object and is measured by the amount of work done.

### Types of Energy

• Mechanical energy
• Mechanical wave energy
• Chemical energy
• Electric energy
• Magnetic energy
• Nuclear energy
• Ionization energy
• Elastic energy
• Gravitational energy
• Thermal energy
• Heat Energy

## Power

 Definition Power can be defined as the rate at which work is done i.e.. , energy converted. Formula The formula for power is Unit The unit of power is watt (W) .

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