How do electricity and magnetism relate to each other

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Also in Coal explained Coal Mining and transportation Where our coal comes from Imports and exports How much coal is left Use of coal Prices and outlook Coal and the environment. Renewable sources. The stronger the magnetic field, the stronger its effect on the electrical polarization. If you change the direction of the magnetic field a little bit, the polarization can completely tip over. This is a new form of the magnetoelectric effect, which was not known before. In a next step, we will try to change magnetic properties with an electric field instead of changing electrical properties with a magnetic field.

In principle, this should be possible in exactly the same way. If they succeed, this presents a promising new way to store data in solids. If there were a direct way to switch the magnetic properties of a solid-state memory with an electric field, this would be a breakthrough. The views expressed in this article do not necessarily represent those of Elsevier. Link to original source. When these particles are at rest, it is called static electricity. Static electricity occurs due to the existence of charged particles.

On the other hand, when charged particles flow through the conductor, it is called current electricity. Because, when the charged particles flow through the conductor, electricity also flows. We know that current means the flow of anything in a particular direction. For example, the flow of water in a particular direction is called water current. In the similar way, the flow of electricity or charged particles especially free electrons in a particular direction is called current electricity or electric current.

Magnetism is a type of attractive or repulsive force that acts up to certain distance. Because the force on a charge depends on the magnitude of the charges involved and on the distances separating the charges, the electric field varies from point to point, both in magnitude and direction. By convention, the direction of the electric field at a point is the direction of the force on a positive test charge placed at that point. An example of the electric field due to a positive point charge is given below.

Power and Magnetic Fields A phenomenon apparently unrelated to power are electrical magnetic fields. We are familiar with these forces through the interaction of compasses with the earth's magnetic field, or through fridge magnets or magnets on children's toys. Magnetic forces are explained in terms very similar to those used for electric forces:.

As in the case of electric charges, it is convenient to introduce the concept of a magnetic field in describing the action of magnetic forces. Magnetic field lines for a bar magnet are pictured below. One can interpret these lines as indicating the direction that a compass needle will point if placed at that position. The strength of magnetic fields is measured in units of Teslas T. One tesla is actually a relatively strong field - the earth's magnetic field is of the order of 0.

Magnetic Forces On Moving Charges One basic feature is that, in the vicinity of a magnetic field, a moving charge will experience a force. Interestingly, the force on the charged particle is always perpendicular to the direction it is moving. Thus magnetic forces cause charged particles to change their direction of motion, but they do not change the speed of the particle.

This property is used in high-energy particle accelerators to focus beams of particles which eventually collide with targets to produce new particles in gamma rays and radio waves. Another way to understand these electricity and magnetism forces is to realize that if the force is perpendicular to the motion, then no work is done.

Hence these forces do no work on charged particles and cannot increase their kinetic energy. If a charged particle moves through a constant magnetic field, its speed stays the same, but its direction is constantly changing.

A device in which this property is used is the mass spectrometer , which is used to identify elements. A basic mass spectrometer is pictured below. In this device a beam of charged particles ions enter a region of a magnetic field, where they experience a force and are bent in a circular path. The amount of bending depends on the mass and charge of the particle, and by measuring this amount one can infer they type of particle that is present by comparing to the bending of known elements.

Magnet Power From Electric Power A connection was discovered accidentally by Orsted over years ago, who noticed that a compass needle is deflected when brought into the vicinity of a current carrying wire.