Study the diagram and describe in your own words how electricity produced in a power plant reaches your home.
Important Questions on Electricity
Observe an electric cell. You will notice that there is a positive sign on the upper side. This sign is for the metal cap on the top. It is the positive terminal of the cell. The positive terminal is actually the carbon rod placed inside the cell. The metal cap is the tip of the carbon rod.
Now, look at the lower portion of the electric cell. You will find a negative sign. The metal disc at the bottom is the negative terminal of the cell. Every electric cell has a positive terminal and a negative terminal.
The cell is filled with certain chemicals. These chemicals react to produce electricity. An electric cell converts chemical energy into electrical energy. When the chemicals get used up, the cell stops producing electricity and the appliance working on it stops functioning. The electric cell then has to be replaced by a new cell.
Carefully read the description about the electric cell given and write a passage on 'Cell—a mini-power plant'.
Study the pictures and write what is wrong with these circuits.
We must save electricity. Write 'Yes' or 'No' for the following questions to see if you are saving electricity.
Do you switch off lights, fans and other electrical gadgets when not in use?
We must save electricity. Write 'Yes' or 'No' for the following questions to see if you are saving electricity.
Do you make maximum use of daylight and reduce the use of electricity?
We must save electricity. Write 'Yes' or 'No' for the following questions to see if you are saving electricity.
Will you use LED instead of bulbs wherever possible?
We must save electricity. Write 'Yes' or 'No' for the following questions to see if you are saving electricity.
Do you open the door of your refrigerator too often?
We must save electricity. Write 'Yes' or 'No' for the following questions to see if you are saving electricity.
Are there low wattage bulbs for corridors and other such areas in your home?
We must save electricity. Write 'Yes' or 'No' for the following questions to see if you are saving electricity.
Do your parents remove the cord of the appliance from the supply when not in use?
