- Electricity is the movement of charges (electrons) or electrical power through a suitable medium.Electricity refers to the flow of electric current through a medium such as a metal wire. It is a form of energy that can be generated through the following:
- Electric cells
- Batteries
- Investors
- Generators
- The movement of particles in one direction is called current.Electric current is the flow of particles in an electric circuit that generate electricity.
- Draw neat and labelled diagram of dry cell.
- A dry cell is a device that generates electricity based on chemical reactions. When the two electrodes of the cell are connected via a closed path, then the cell forces the electrons to flow from one end to the other. The flow of electrons causes the current to flow in the closed circuit.
- When dry cells are connected in series , they are called battery of cells.
- Electric Circuit: Any closed-loop path that is taken by an electric current is called an electric circuit.
- Symbols:
- Conductors are those substances through which electricity can flow are called conductors. Metals are good conductors and nonmetals ( except graphite ) are insulators.
- Insulators are those substances through which electricity cannot flow are called insulators. ex. bakelite, PVC etc..