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.
    Photoemission of electrons occurs from a metal (\( \phi_0 = 1.96 \, \text{eV} \)) when light of frequency \( 6.4 \times 10^{14} \, \text{Hz} \) is incident on it. Calculate: Energy of a photon in the incident light, The maximum kinetic energy of the emitted electrons, and The stopping potential.


      • 2.
        Draw a circuit diagram of a full-wave rectifier using p-n junction diodes. Explain its working and show the input-output waveforms.


          • 3.
            Write any two features of nuclear forces.


              • 4.
                If Bohr’s quantization postulate (angular momentum \( = \frac{nh}{2\pi} \)) is a basic law of nature, it should be equally valid for the case of planetary motion also. Why, then, do we never speak of quantization of orbits of planets around the Sun? Explain.


                  • 5.
                    Assertion (A) : The mass of a nucleus is less than the sum of the masses of the constituent nucleons. Reason (R) : Energy is absorbed when the nucleons are bound together to form a nucleus.

                      • Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
                      • Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
                      • Assertion (A) is true, but Reason (R) is false.
                      • Both Assertion (A) and Reason (R) are false.

                    • 6.
                      Two parallel plate capacitors X and Y are connected in series to a 6 V battery. They have the same plate area and same plate separation but capacitor X has air between its plates, whereas capacitor Y contains a material of dielectric constant 4. Calculate the capacitances of X and Y, if the equivalent capacitance of the combination of X and Y is \( 4 \, \mu\text{F} \). Calculate the potential difference across the plates of X and Y.

                        CBSE CLASS XII Previous Year Papers

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