हिंदी
Tamil Nadu Board of Secondary EducationTamil Nadu Primary School Class 4

Electrical Energy

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Topics

  • Introduction
  • Applications of Electrical Energy
  • Storage of Electrical Energy

Introduction:

Electrical energy is a type of energy that is produced when an electrical circuit works. It is the energy that we use to power many things in our daily lives, like lights, fans, computers, and TVs.

Electrical energy can be created in different ways. It can come from:

  • Batteries
  • Generators
  • Dynamos
  • Solar panels (photovoltaics)

These devices either create electrical energy or store it for later use. For example, batteries store electrical energy that can be used later to power things like remote controls or toys.

Applications of Electrical Energy:

Electrical energy is very important because it can be changed into many other forms of energy. Here are a few examples:

  • Light Energy: When you switch on a bulb, electrical energy is changed into light energy, which helps you see in the dark.
  • Heat Energy: When you turn on a heater or an iron, electrical energy is changed into heat energy, which warms your room or smooths out your clothes.
  • Mechanical Energy: Motors use electrical energy to make things move. For example, a fan turns because the electrical energy is changed into mechanical or kinetic energy, making the blades spin.

Storage of Electrical Energy:

Electrical energy can also be stored for later use. It can be stored in:

  • Batteries: These store electrical energy that can be used later to power small devices.
  • Capacitors: These are used in some electronic devices to store small amounts of electrical energy.
  • Magnetic fields: Some types of machines can store electrical energy using magnetic fields.

Examples of Electrical Energy in Action:

  1. Motors: A motor uses electrical energy to create movement. This movement is called mechanical energy or kinetic energy. For example, in a fan, the motor turns the blades, making the fan spin and create air movement.
  2. Generators: A generator works the opposite way. It takes kinetic energy (movement energy), like when you turn a crank or use wind or water power, and changes it into electrical energy. This electrical energy can then be used to power machines or lights.
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