Electromagnetism Essay Example | Topics and Well Written Essays - 1500 words

Electromagnetism - Essay Example Some non-magnetic materials which are conductors help shield magnetic field. A good example is a superconductor, when this material is placed between two magnetic materials; it tends to exclude the magnetic fields created by the magnets. A superconductor material behaves like a magnet in that if the South Pole of the magnet is brought near it, the magnet behaves as though it is being approached by itself from the other side the superconductor. The magnet’s South Pole then starts to repel the â€Å"north pole of the other magnet†, which is just a mirror of itself. Therefore, if a superconductor is placed between which are facing each other no change will be noticed since the two poles of the magnet will tend to repel each other hence cutting off the magnetic fields that existed before. This scenario is very useful in case you don’t need any field in a particular region. The iron box will be used since the fields travel in the walls of the box and does not penetrat e into it. Falling magnets Using the three plates inclined at an angle of 60 degrees, place the magnet on the three plates and allow the magnets to slide from a height of about 30cm. the experiment is repeated by using copper pipes held vertically. The magnet without a stud is dropped while its axis of symmetry is vertically down each pipe. When the magnet is placed along the three plates inclined at an angle of 60 degrees, the magnet slide down the plate slowly. This happens so because the voltage will increase as the magnet moves down the sheets and not when magnet it is stationary. Magnetic fields come about due to electric currents. If these magnetic fields are changed by moving the magnet near a non-magnetic material or metal, it... This paper examines the magnetic field separated by a superconductor material. Magneto static or dipole-dipole forces are very critical in determining the microstructure of any magnet. Magnetic fields in magneto statics which are constant at a particular moment in time always produces steady currents. The charge passing in a wire at per unit time is called the current of that particular wire. Conventionally, it is assumed that electric current always flow in the direction of the movement of the positive charges. Nonmagnetic materials which are conductors can shield the magnetic field to some extent. Some non-magnetic materials which are conductors help shield magnetic field. A good example is a superconductor, when this material is placed between two magnetic materials; it tends to exclude the magnetic fields created by the magnets. A superconductor material behaves like a magnet in that if the South Pole of the magnet is brought near it, the magnet behaves as though it is being approached by itself from the other side the superconductor. Magnetic fields come about due to electric currents. If these magnetic fields are changed by moving the magnet near a non-magnetic material or metal, it induces electric field that is the difference in voltage in the metal. This then produces a magnetic field which is oriented in the direction opposite to that of the magnet. For a homopolar motor, the battery produces electric current which then moves in a radial manner through the magnetic disc.