Electricity

Things to remember

• Electric charge is defined as the electrical property of particle or a body.
• The electricity that is possessed due to change in the number of electrons in bodies is called current electricity.
• The electricity that is possessed due to flow of electrons in conductors is called static electricity.
• An instrument or a device that changes a non-electrical energy into electrical energy is called the sources of electricity.
• The devices, which convert chemical energy into electrical energy, are called cells.
• Generators or dynamo are those devices which convert mechanical energy into electrical energy.
• The conducting path through which electricity flows is called electric circuit. An electric circuit, through which electricity flows, is called a closed circuit.
• Ammeter is an electrical device which measures the electric current flowing through a circuit.
• Galvanometer is an electrical device which detects the presence of current in an electric circuit.