ENERGY- AN INTRODUCTION

 In general, energy can be defined as the capacity to do works or energy can be considered as the force that makes the things move. Energy is a fundamental part of life and it comes in different forms. Everything occurs around as is associated with some form of energy.

Types of energy 

  • Heat energy - energy from the heat
  • Light energy - energy from the light
  • Muscular energy - energy from the food we eat
  • Wind energy - energy due to the movement of air
  • Chemical energy - energy produced due to chemical reactions 
  • Mechanical energy - energy due to the movement of machinery 
  • Electrical energy - energy associated with movement of electric charges 
  • Nuclear energy - energy stored in atoms 
Energy is present all around universe. In coming topics we study in details about different energy forms there transfer, source, uses etc..

Law of conservation of energy 

According to the law of conservation of energy, energy can neither be created nor be destroyed, it can transfer from one form to another.

Examples :- in a cell chemical energy is converted to electrical energy, in a fan electrical energy is converted to mechanical energy etc

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