Electricity And Its Importance


 
 
Concept Explanation
 

Electricity And Its Importance

Electricity has been part of our lives. Electricity is a useful form of energy. It plays a very important role in our daily life.We use electricity to make our work easier. For example, it is used to run pumps that lift water from ground to the rooftop tank. It is also needed for functioning of televisions, computers,refrigerators, geysers, air conditioners, electric fans, electric bulbs, etc. It has brought many things that surely have made many wonders and life would seem so hard without it.

However, electricity has much more important aspects because it is a fundamental feature of all matter. Electricity is the force that holds together the molecules and atoms of all substances.

Electricity is is used to produce various forms of energy:

1. Heat Energy

2. Light Energy

3. Sound Energy

4. Movement Energy

Heat Energy: Electricity is used in various devices which produce heat.For Example

Gyser

Hair Dryer

Heater

Kettle

Microwave Oven

Light Energy: Electricity is used in various devices which produce light.For Example

Torch

Tube Light

Decoration Lights

Bulbs

CFL

Sound Energy: Electricity is used in various devices which produce sound. For Example

Piano

Musical Toys

Speaker

Electric Bell

CD Player

Movement Energy: Electricity is used in various devices which produce movement in them. For Example

Rope Way

Lift

Electric Train

Fan

Electric Scooter

Sample Questions
(More Questions for each concept available in Login)
Question : 1

Which of the following are correct :

(a) Electricity is used to run pumps that lift water from ground to the rooftop tank.

(b) Electricity is also needed for functioning of televisions, computers,refrigerators, geysers, air conditioners.

(c) Example of movement energy is electric train.

Right Option : D
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Explanation
Question : 2

Which of the following device converts electrical energy into light energy?

Right Option : B
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Explanation
Question : 3

Which of the following are correct :

(a) Electricity is used in hair dryer which produce heat.

(b) Electricity is used in bulbs and tube light which produce light.

Right Option : C
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Explanation
 
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