The Magnetic Effect Of Electric Current.
The Magnetic Effect Of Electric Current . Introduction The electricity and magnetism are linked to each other and it is proved when the electric current passes through the copper wire, it produces a magnetic effect. The electromagnetic effects first time noticed by Hans Christian Oersted in 1820, Around 1830, Michael Faraday discovered that a magnetic field can generate an electric current if a conductor crosses the lines of force in a magnetic field. Magnetic Field A magnetic field is a quantity, which has both magnitude and direction. The direction of a magnetic field is usually taken to be the direction in which, a north pole of the compass needle moves inside it. It is the convention that the field lines emerge from the north pole and merge at the south pole (see the image given above). No two field lines of a magnet bar are found to cross each other. If it happens, then it means that at the point of intersection, the compass needle would point towa...