Class 7 electric circuit.pptx

Class 7 CBSE electric circuit presentation

1. Power Stations Home Transformers Electric current in our home

2. How are the fans, television, light bulbs connected from these electric transformers ???? Are they directly connected to the electric current wires?

3. Let us learn how the current flows into our home.

4. Electric circuit Electric circuit simply means a closed path of wires Through these wires the current flows to the electric bulb, electric fan and other appliances. They include switches , fuses.

5. How will be draw the electric circuit? Electric component Symbol Cell Bulb Or Wire Switch

6. Lets draw a simple circuit Switch is open

7. Switched closed

8. What is battery? Electric cell A combination of two or more cells is called a battery

9. Arrangement of cells in battery T he positive terminal of one cell is connected to the negative terminal of the next cell. Sometimes the cells are placed side by side. There is usually a thick wire or a metal strip connecting the positive terminal of one cell to the negative terminal of the next cell

10. Batteries

11. Symbol of battery

12. Identify the below symbol of electric circuit. 2. What happens to the electric circuit when the switch is open or off? 3.What happens when electric cells are not arranged in specific order in a torch?

13. Homework Draw an electric circuit of a torch