What are the five types of energy?

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Jasmine Grover

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There are different forms of energy that can be transformed from one to another. Energy can never be created or destroyed, it can only be transformed. The two most basic types of energy are potential energy and kinetic energy.

  • The energy that is present in things that move is known as kinetic energy
  • Examples of kinetic energy include mechanical and electrical energy.
  • The energy stored in objects that can be used in the future is known as potential energy.
  • Examples of potential energy include chemical and nuclear energy.

Types of Energy

The five different types of energy are as follows:

  1. Electrical Energy

Electrons are tiny particles that along with protons and neutrons form atoms. The movement of these electrons is known as electrical energy. When the electrons move through a wire, it is known as electricity.

  1. Chemical Energy

The energy that holds atoms and molecules together is known as chemical energy. The energy is stored in the bonds. It is also found in biomass, natural gas, food, and petroleum.

  1. Mechanical Energy

Mechanical energy is the energy stored in different objects. More energy is stored in the objects as they move faster. Examples of mechanical energy include wind, a moving car, or a running person.

  1. Thermal Energy

The energy created from the vibration of atoms and molecules of a substance is known as thermal energy. The faster the atoms move, the more energy they have, and thus the objects become hotter. It is also called heat energy.

  1. Nuclear Energy

The energy stored in the nucleus of atoms is known as nuclear energy. When the nuclei combine through fusion or split apart through fission, nuclear energy is released.

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CBSE CLASS XII Related Questions

  • 1.
    Suppose a pure Si crystal has \( 5 \times 10^{28} \) atoms per \( \text{m}^3 \). It is doped with \( 5 \times 10^{22} \) atoms per \( \text{m}^3 \) of Arsenic. Calculate majority and minority carrier concentration in the doped silicon. (Given: \( n_i = 1.5 \times 10^{16} \, \text{m}^{-3} \))


      • 2.
        A tank is filled with a liquid to a height of \( 12.5 \, \text{m} \). The apparent depth of a needle lying at the bottom of the tank is measured to be \( 9.0 \, \text{m} \). Calculate the speed of light in the liquid.


          • 3.
            Write the expression for the magnetic field due to a current element in vector form. Consider a 1 cm segment of a wire, centered at the origin, carrying a current of 10 A in positive x-direction. Calculate the magnetic field \( \mathbf{B} \) at a point \( (1 \, \text{m}, 1 \, \text{m}, 0) \).


              • 4.
                Draw a circuit diagram of a full-wave rectifier using p-n junction diodes. Explain its working and show the input-output waveforms.


                  • 5.
                    Two small identical metallic balls having charges \( q \) and \( -2q \) are kept far at a separation \( r \). They are brought in contact and then separated at distance \( \frac{r}{2} \). Compared to the initial force \( F \), they will now:

                      • attract with a force \( \frac{F}{2} \)
                      • repel with a force \( \frac{F}{2} \)
                      • repel with a force \( F \)
                      • attract with a force \( F \)

                    • 6.
                      A long solenoid of length \( L \) and radius \( r_1 \) having \( N_1 \) turns is surrounded symmetrically by a coil of radius \( r_2 \, (r_2>r_1) \) having \( N_2 \) turns (\( N_2 \ll N_1 \)) around its mid-point. Derive an expression for the mutual inductance of solenoid and coil. Is \( M_{12} = M_{21} \) valid in this case?

                        CBSE CLASS XII Previous Year Papers

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