Conversion of Energy by Major Devices

Dear Readers, In this article I provide a list of  Conversion of Energy by Major Devices which we use in our daily life which are very useful for us.

In most of the Competitive examinations like Railway NTPC, JE, ALP, Group D, SSC CGL, CHSL, Banking, FCI, State PSU, etc., science is a major part of General Knowledge. Most questions arise in the examination from List of all Inventions and discoveriesChemical FormulasList of all Inventions and discoveries, Important Minerals & Ores, Various Branches of science/Study of Different fields, etc. 

Law of conservation of energy

The law of conservation of energy states that energy can neither be created nor destroyed. It only converted from one form of energy to another. This means that a system always has the same amount of energy unless it’s added from the outside.

Conservation of energy was distinct from conservation of mass; however, special relativity showed that mass is related to energy and vice versa by E = mc2, and any object with mass can itself be converted to pure energy, and vice versa.


E is the amount of energy in an object or system.

m is the mass of the object or system.

c is the speed of light .c =3 × 108 m/s


Transformation of Energy 

List of Conversion of Energy by Major Devices:

Name of the Instrument/ Equipment Conversion of Energy
Candle Chemical energy into light energy and heat
Coal Chemical energy into Thermal energy
Dynamo Mechanical Energy into Electrical energy
Electric Bulb/Tube Electric energy into light energy
Electric Cell Chemical energy into Electrical energy
Electric heater Electrical energy into heat
Electric Motor Electric energy into mechanical energy
Heat Engine Thermal energy (Heat energy) into Mechanical energy
Heater Electrical energy into Thermal energy
Loudspeaker Electrical energy into sound energy
Microphone Sound energy into Electrical energy
Musical Instruments Mechanical energy into Sound energy
Solar cell Solar energy into electrical energy

Other important Science topics are:

Father of Various Field || All Branches: 430+ list

List of all Inventions and discoveries

140+ List of Measuring Instruments and Their Uses

Study of Different Fields

410+ List of Chemical Names and formulas: All common Formulas


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I am Arati Nayak. I like to share knowledge for students and Aspirants to make everything easy, clear, and unique.

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