Magnetic Effects of Electric Current

This topic states that the magnetic field is the region of influence around a bar magnet or a current-carrying conductor. Magnetic field lines showing the magnetic field can be traced using a magnetic compass. These are the non-intersecting closed curves that repel each other.

Through this topic, we will understand the concept of magnetic field due to a current carrying conductor. It discusses the cases of current through straight conductor and circular loop. It also explains the use of the right hand thumb rule.

This topic explains that a current-carrying conductor experiences a force when it is placed in a magnetic field. This force pushes the conductor out of the magnetic field. The direction of force acting on the conductor is given by Fleming’s left-hand rule.

This topic defines an electric motor, a device that converts electrical energy into mechanical energy. An electromagnet with the soft iron core is used in commercial motors. Electric motors are used in computers, refrigerators, grinders, etc.

In this topic, we will understand the concept of electromagnetic induction with the help of an activity and illustrative diagrams. It also describes how to use Fleming's right-hand rule for the prediction of direction of current.

In this topic, we will learn how an electric generator converts mechanical energy into electrical energy. It works on the principle of electromagnetic induction. Mechanical energy rotates a conductor coil in magnetic field to produce electricity for various use.

This topic teaches us that earthing of domestic electric circuits is done to avoid electric shocks. The power supply consists of a live wire, neutral wire and earth wire. One end of the earth wire is connected deep under the earth, and the other end is connected to appliances.