Magnets

Introduction A magnet is a stone that generates a magnetic field. Although the magnetic field is invisible, it is the most important aspect of the magnet: attraction of metal objects or repulsion of other magnets. Magnets are commonly used in everyday household items, ie credit cards, televisions, speakers, motors, compasses, and so on. The strength of the magnet is measured by its magnetic moment. ("Magnetics") The way it all started. Legend about magnet discovery. One of the more common things is that the elderly shepherd, Magnes, placed sheep on herds of Magnesia in northern Greece about 4,000 years ago.

The space surrounding the magnet is called the magnetic field where the magnetic force acts. If a strip magnet is placed in such a magnetic field, it will experience magnetic force. However, even if the magnets are removed, the magnetic field will continue to exist. The direction of the magnetic field at a certain point is the direction of the resultant force acting on the imaginary N pole placed at that point. Just as the electric field is explained by pulling the power line, the magnetic field is also explained by subtracting the field lines. When a small north pole is placed in the magnetic field generated by the magnet, it receives power. If the North Pole is free, it will move under the influence of the magnetic field. The path of the North Pole that moves freely under the influence of the magnetic field is called magnetic field line.

The magnetic pole of the magnet is the strongest point of the magnetic field of the magnet, usually both ends of the magnet. Magnetic field lines leave the magnet from the north pole, enter through the South Pole and find the simplest path. Therefore, if the magnet is divided in half, two new magnets with arctic and south poles respectively can be created. We saw how the current creates the magnetic field. Likewise, if the wire is placed in a magnetic field to cut magnetic field lines, the movement of the magnet can generate electricity. Without magnetic force you can not use electricity, and vice versa. Electromagnetism

Magnetic field, vector field near magnet, current or changing electric field. Here you can observe the magnetic force. A magnetic field like the earth aligns the magnetic compass needle and other permanent magnets in the direction of the magnetic field. The magnetic field moves charged particles in a circular or spiral path. This force is applied to the current flowing through the wire in the magnetic field - the basis of the motion of the motor. (For details of the magnetic field, see Magnetics.