Respuesta :
Answer:
Magnetism
Explanation:
Magnets, or magnetic fields formed by moving electric charges, may attract or repel other magnets, as well as alter the motion of other charged particles. Magnetism is a natural force caused by moving electric charges. These movements can be tiny and occur within a substance known as magnets. Magnets, or magnetic fields formed by moving electric charges, may attract or repel other magnets, as well as alter the motion of other charged particles. The Lorentz force is exerted on particles by a magnetic field. The force acting on an electrically charged particle in a magnetic field is proportional to the amount of the charge, particle velocity, and magnetic field intensity. The Lorentz force is distinguished by the fact that it forces particles to travel at right angles to their original motion. Some materials, such as iron, are permanent magnets, which means they can maintain a magnetic field indefinitely. These are the most frequent types of magnets found in daily life. Other materials, such as iron, cobalt, and nickel, can be given a temporary magnetic field by enclosing them in a bigger, more intense field, but these materials will soon lose their magnetism. According to HyperPhysics, magnetic fields are created by the movement of electric charges. Electrons all have angular momentum, which is a fundamental quantum mechanical feature known as "spin." Most electrons in atoms tend to form pairs in which one is "spin up" and the other is "spin down," or their angular momenta point in opposing directions. In this situation, the magnetic fields formed by the spins point in opposing directions, canceling each other out. However, certain atoms contain one or more unpaired electrons, which generate a modest magnetic field. The magnetic field's direction is determined by the direction of their spin. When a substantial number of unpaired electrons have their spins aligned in the same direction, they combine to form a magnetic field strong enough to be measured on a macroscopic scale. As the field propagates outward from the north pole and enters through the south pole, it generates a toroidal, or doughnut-shaped field. The Earth is a massive magnet. According to NASA, the planet's magnetic field is generated by flowing electric current within the molten metallic core. A compass points north because the little magnetic needle inside it is hung, allowing it to spin freely inside its shell and align with the Earth's magnetic field. Because it draws the north magnetic poles of compass needles, what we call the Magnetic North Pole is actually a south magnetic pole.
