Electric Current and Its Effects Class 7 Notes

Electric Current and its Effects Class 7 Science Notes – Chapter 14

Representation of electric components is very easy with the help of symbols. Drawing a circuit diagram is done conveniently with the help of these. Heating effect of the current is defined as, the heating of wire due to the flow of electric current through it. When the electric current is flowing through the wire, it acts as a magnet. It has several applications. Some wires are made of unique materials.

Such wires melt rapidly and when a large electric current is passed through them they break. One major example of such material is an electric fuse. Electric fuses prevent fire as well as damage to any electric appliance. An electromagnet is defined as an insulated wire coil carrying current is wrapped around an iron piece. Please refer Electric Current and Its Effects Class 7 Notes for more revision notes.