Mind Map- Electricity
Current electricity- The rate of flow of charges per unit time. The S.I unit of current is ampere (symbol A)
Sources-
1.The electric cell and battery
2. The mains
3. The generator
4. Solar cells
Flow of charges (current electricity)
1.
2.
3.
Conductors and insulators: Substances which allow electricity to flow through them is called conductors. Examples: all metals, human body and impure water.
Substances which do not allow electricity to flow through them is called insulators. Examples: rubber, ebonite, wood etc.
Circuit: The path along with electricity flows.
When an electric path is complete is called closed circuit and the path with a break is called open circuit.
Series and Parallel connection
Series connection- All appliances work together. If one appliance does not work , other also will not work.
Parallel connection- All appliances work independently.
Symbols:
Here is a video representation:
