What is electromagnetic conduction?
When a pice of magnet shuttles through a loop of conductor (copper wire) it induces electric energy in the conductor, this is known as induction. When alternating current (AC) or interrupted DC current applied to the primary winding of a transformer, the magnetic flux cutting through the secondary known as conduction produces electric power in the secondary. The ratio of power gained or lost in the secondary winding depends on the ratio of turns of conductor between primary and secondary. Newaz.
9 people found this useful
Any conductor carrying an electric current induces a magnetic field. If the conductor is wrapped around an iron core, the magnetic field produced can be used for many uses. Most people have seen scrap-yard magnets used for picking up iron and steel scrap. Electromagnets are also used as electrica…l relays, speakers, mechanical movements, and metal separators in industry. There are thousands of other uses for this very useful device. A simple electromagnet is constructed by winding a wire around a cylinder (e.g., empty thread spool) and attaching the ends of the wire to the poles (+ and -) of a battery. An electromagnet is a coil of wire wrapped around a metal core several times. The individual magnetic fields of the individual wires reinforce and strengthen to form one large magnetic field. (MORE)
Electromagnetic waves are the mechanism by which electromagnetic energy (electromagnetic radiation) moves. They are composed of two components: an electric wave, or an electric field, and a magnetic wave or magnetic field. The fields are in dynamic motion, and these two waves are in phase and move a…t 90 degrees to each other. The orientation of this "package" can vary in the space through which it moves, which leads to what we term polarization, but the electric and magnetic components always maintain the right angle relationship to each other. Draw an "X" with the angles it creates equal to 90 degrees. Got it? A cross? Now rotate it just a bit. The whole thing. Now a bit more. Now a bit more. You are looking at the electromagnetic wave as it's coming at you (or going away), and you're changing the polarization of the cross without changing the cross itself. Let's jump. One of the four basic forces in the universe is the electromagnetic force. Not the electric force, not the magnetic force, but the electromagnetic force. You can't have one without the other. Ever. A magnetic field is always created by some sort of charge movement. It is the only way a magnetic field can be created. Just like you can't have gravity without mass, you can't have magnetism without some sort of charge movement. Any time a charge moves, a magnetic field is created. All the time. Every time. No exceptions. Let's jump to go a step further. Let's take a simplified example. Picture a pond as smooth as glass. We walk out on a low dock and kneel down at the water. Then we take our index finger and just "tap" the surface of the water one time. A ripple is generated, and it moves out away from the point where we initiated it. We good? Let's bounce a bit. If we take a charged particle like, say, an electron that is in orbit around an atom, and we give it some energy to kick it out to the next higher orbital; we have ionized the atom. The electron will then "dump" that extra energy and return to its original orbital. That energy it dumps will take the form of a "particle" or "package" of energy - a quantum of energy. And it is a moving electric and a complimentary moving magnetic field - just like the ripple on the pond. Only it is this "coupled" electric and magnetic "bundle" of energy. It's a photon, or a quantum of electromagnetic energy. The energy of the wave is carried in the moving fields, and that is why the wave does not require a medium through which to travel. In fact, anything other than a vacuum will attenuate or "suck energy" out of the wave a bit at a time through the distance through which the wave travels in that medium. As you might have guessed, electromagnetic radiation comes in different "amounts" or amplitudes, and in different frequencies (energies). From radio waves through microwaves, and through infrared light, visible light, ultraviolet light and X-rays all the way to gamma rays, there is a full spectrum of this energy. This gets deep, but the essence of what is happening is here. Simple, but subtle and elegant. Reachable by even elementary school investigators. It is the essential nature of the universe we live in. Wikipedia has more information, and a link is provided below to their post on electromagnetic radiation. Further investigation is encouraged. At least surf on over and look at the drawing of the moving and electric and magnetic fields to lock that in. Maybe skim the article while you're there, or at least bookmark it. You've just peeked through the window in the quantum mechanical universe. Enjoy the view. Wonder at it. It is the reality in which we live. (MORE)
There is no such thing as a "unit of electromagnetic". There areseveral units related to electricity, electromagnetic waves, etc.,depending on exactly what aspect you want to measure. For example,in the case of electricity, there are units for voltage, current,intensity, power, frequency, and others…. (MORE)
General answer In general, conductivity is the measure of theability of a material to conduct either electricity (electricalconductivity) or heat (thermal conductivity). Alternative Answer It's a physical characteristic of a material, affected bytemperature, and is the reciprocal of resistivity. I…n SI, its unitof measurement is the Siemens per metre. Conductivity measures the water's ability to conduct electricity. (MORE)
So that we can use the computer, watch the television and fans. And other things that need electricity.
Electromagnetism is the "effect" of the electromagnetic force, which is one of the four fundamental forces in the universe. Electromagnetism speaks to electric fields and the relationship between magnetic fields and moving electric fields. Electromagnetism is the force that causes the interaction be…tween electrically charged particles, and is responsible for practically all the phenomena observed in daily life, except gravity. Electricity and magnetism are the two obvious examples. The chemical bonds holding molecules together are electromagnetic. Light is electromagnetic radiation. The light need not be visible light. Heat, infrared radiation, UV (ultraviolet radiation), gamma rays, microwaves, radio waves--all of these are examples of light. The photon is the gauge boson which mediates the electromagnetic force. Refer to the link below to read more about the electromagnetic force. Magnetism induced on a ferric material form the alignment of electrons caused by a electric field. (MORE)
Electromagnetic energy refersto the energy that comes from electromagnetic radiation. Thisradiation is composed of waves that move at the speed of light in away that is suggestive of both waves and particles..
Answer . Industrial Electromagnets Use higher quality metals for the coil winding. Also the windings are of different design and there are more of them. The metals used for the conductor are also of better quality material and have greater voltage sent to them.
An electromagnet is a magnet that runs on electricity. Unlike a permanent magnet, the strength of an electromagnet can easily be changed by changing the amount of electric current that flows through it. The poles of an electromagnet can even be reversed by reversing the flow of electricity. An elect…romagnet works because an electric current produces a magnetic field. The magnetic field produced by an electric current forms circles around the electric current. (MORE)
It is the joining of electricity and magnetic field, it is the study if the interaction between the two.
An electromagnet is a controllable magnet. It can be switched on and off. This is useful for all kinds of applications. The magnet can attract an armature, causing physical movement. This can be used to make a heavy duty switch (as in relays and contactors ), or used to unlatch doors and locks etc…. The biggest and most obvious use in industry, is to lift piles of scrap iron using a crane. The magnet is energized when lifting and switched off when you want the scrap to drop. (MORE)
There are two kinds of conduction: thermal conduction and electrical conduction. . In thermal conduction , thermal energy (heat) transfers through a substance from a hotter region toward a cooler region. For example, when you dip a metal spoon into a cup of tea, the heat from the hot tea will… conduct along the spoon so that the handle becomes warm, even though the handle is not in direct contact with the hot tea. . In electrical conduction , free electrons pass through a substance, thus enabling an electric current. Some materials are better conductors than others. Most metals are good thermal conductors, and certain metals (copper, aluminum) are very good electrical conductors. When a material is an exceptionally poor conductor, we call it an insulator. Styrofoam is a good thermal insulator, and glass is a good electrical insulator. (MORE)
You actually know more about it than you may think! The electromagnetic (EM) spectrum is just a name that scientists give a bunch of types of radiation when they want to talk about them as a group. Radiation is energy that travels and spreads out as it goes-- visible light that comes from a la…mp in your house and radio waves that come from a radio station are two types of electromagnetic radiation. Other examples of EM radiation are microwaves , infrared and ultraviolet light, X-rays and gamma-rays . Hotter, more energetic objects and events create higher energy radiation than cool objects. Only extremely hot objects or particles moving at very high velocities can create high-energy radiation like X-rays and gamma-rays. (MORE)
Electromagnets tend to be stronger than normal magnets, and they can be turned on and off at will.
Quite a lot of things, speakers, telephones, tatoo guns, certain componets in computers, (fans) industrinal -to pick up cars, scrap, ect, mri machines, and a hole host of other things.
An electromagnet is a magnet carrying an electric current. This can be useful for many things. eg, door bells.
The word conductance is defined as the reciprocal of resistance. Itis inversely proportional to the resistance. Mathematically, it canbe expressed as: G=(1/R) or G=(R/z^2)
You take a battery and you attach each end of a wire to it then you wrap a peice of iron in the middle of the wire.
William Sturgeon was the first inventor to create electromagnets.He was an English inventor who lived from 1783 to 1850 CE.
Electromagnetism is whenever electricity flows through some type ofmetal to form a magnetic field over a certain area. This processwasnÃ?t discovered until the 1800s.
well electromagnetic radiation is a combination of electrical and magnetic. well electromagnetic radiation is a combination of electrical and magnetic
It is the ability of the atom in covalent molecule to attract the electrons of the bond towards itself.
To make a small electromagnet all you need is an iron nail and some fine isolated wire. Wind a couple of feet of the wire around the nail then connect one side of the wire to the positive side of the battery and the other to the negative. At the moment they are connected to the battery the nail is a… magnet and as soon as the power comes of it will have lost most of its magnetism. Just an ordinary torch battery will do. (MORE)
An electromagnet converts electric current into a magnetic field. They are useful when the magnet should be able to be controlled, rather than a permanent magnet.
every time electricity passes through a wire, it gives off an electric current. this is the basis of an electromagnet. if you add coils to the wire, there will be more current in a smaller space this will make it stronger. you can also make it stronger by: . putting more current through the wire . … putting a iron core through the wire electromagnets are found in bells, scrap heap cranes, circuit breakers and much more. the advantage of electromagnets is that they can be turned on and off. (MORE)
The transfer of heat by molecular motion from a source of high temperature to a region of lower temperature, tending toward a result of equalized temperatures.
In electricity current is conducted. The conduction is caused by a voltage and the amount of current conducted is determined by a resistance. This is in accordance to Ohm's law.
Transfer of heat energy resulting from differences in temperature between adjacent bodies or adjacent parts of a body
A lot of things like a blender and a speaker and so many other things i can't think of right now :)
There is a computer that controls the X-ray -- a form of electromagnetic radiation. There was a computer that came out from toymaker Coleco. It had everything an owner would want. It included a tape drive and a printer. The thing was, when it was turned on, (everytime), a surge of electromagnetic en…ergy would erase any data on the media that was left in the drive. I am not an expert on them but my advice is to stay from them. (MORE)
Wrap copper wire over metal rod and supply electricity, possibly using any DC battery. Please see the attach link for detail to construct. Kid should have adult supervision for this experiment.
Conduct is another word for managing or controlling. A great example is code of conduct, it means law of control.
temporary magnets that only when electricity is passed through them. there r many types of electronic magnets. (u cam check on google) Motion of a 'charge' through a 'field', or, more conventionally understood, an electric current through metal. Actually it is all still quite poorly understood…. i.e. Google 'non linear optics', where the Laws of Physics appear to 'break down'. (MORE)
You don't use it per say. Electromagnetism is merely a name for a force. It essentially says that electricity and magnetism are the same thing, just different form of it. Positive electricity is attracted to negative magnetism and so on. Electromagnetism can be applied be spinning or moving a magnet… (this is what turbines do) through electrical wires to produce electricity. You can also wrap a wire around a magnet many times and send an electrical current through it to make an electromagnet. (MORE)
The transfer of heat by molecular motion from a source of high temperature to a region of lower temperature, tending toward a result of equalized temperatures.
You need it for many things that you use daily like cell phones, headphones (or ear buds).
Electromagnetics are used to create (strong) magnetic fields. This has many applications, from MRI to see brain activity to determining molecular properties to making frogs fly.
Nearly all electrical devices will emit some electromagnetic radiation. In some cases this can be strong enough to affect nearby sensitive instruments or radio receivers and can be the result of multiple devices operating in a small area.
The field of an electromagnet will be strongest along its core, and at the immediate ends of the core.
Well, if too much current goes through the wires or their coating might melt. Or you can always use a hammer. Or a blade. But why do you hate electromagnets anyway?
Not much, really... They are defined as devices that are made up ofa steel or iron core that becomes magnetized by the electricalcurrent that is in a coil which is wrapped around the core. See the related Wikipedia link listedbelow for pictures and more information:
Current passed through a coil of wire (winding inside the motor)creates a magnetic field. In a properly designed motor, this fieldwill be attracted to, or repelled from, another magnetic field alsocreated in the motor. The attraction or repulsion is a force, andin a motor the force is directed to ca…use rotary motion -- hence,torque. This is because the windings of the rotating part of the motor willcreate fields in opposition to the windings in the stationary partof the motor -- similar to the way north and south poles on a barmagnet attract each other while 2 norths or 2 souths repel eachother. (MORE)
There are no electromagnets on the iPad. The permanent magnets are located along the left edge to hold the iPad Smart Cover in place, and a small magnetic switch is located on the right side of the screen to turn the iPad on when the Smart Cover is opened.
A galvanometer is a simple meter that detects the flow of current. A current flowing in a wire causes magnetism around the wire. This is called electromagnetism. Like poles of a magnet repel and opposites attract. The Galvanometer uses these principles in order to move a pointer across a scale.
Electromagnetic energy comes from something that is positively charged... like a fully functioning device such as a full spectrum camera or very powerful electrical outlets.
Electromagnets have a few different practical applications and can be found in different electronics. They are also used in industrial purposes like motors and generators this was an invention of electric motors and generator.
take a small piece of wire and cut the ends out so that the copper part of the wire is shown . Then take a nail and wound the wire tightly on the nail so that the both ends are facing towards you . Then take a battery and attach both the ends to the battery.Then take some iron fillings and put it on… a flat surface.then take the battery and catch it in your hands and bring the nail near the the iron fillings . Then the iron fillings get attracted to the nail. so you can make an electromagnet (MORE)
Yes, they do. They are used to convert electric currents into sounds. See the related link.
The definition for the word electromagnetism is "the interaction ofelectric currents or fields and magnetic fields."
What important ability or property does electromagnetic radiation have that other energy transport processes such as conduction and convection do not?
Electromagnetic radiation can travel through a vacuum (like thevacuum of space), while conduction and convection require matter todo their thing.