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What is made by passing an electric current through coils of wire?
Wiki User
∙ 8y ago
An electro magnet is created when a current is passed through a coil of wire. This effect is the main operation of how an electrical solenoid operates.
Wiki User
∙ 8y ago
Wiki User
∙ 8y agoMagnetism.
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What is field coils?
field coils generally refer to the electromagnetic coils on the stator ( the stationary part of an electric motor ). these generate the magnetic field(s) necessary to put the rotor ( the rotating part of the motor ) into motion.
What is meant by mutual inductance?
Mutual inductance is where two electrically separate coils of wire are either close to each other or share the same core. An alternating current flowing in one of the coils will 'induce' a current to flow in the other coil. For example by using coils wound with wire of the correct length and thickness, a transformer fed by mains electricity can by mutual inductance, produce a lower voltage to power your PC or radio.CommentMutual inductance occurs when a changing current (a.c. or d.c.) flowing in one coil induces a voltage (not a current!) into a second coil.
What do transformer coil have to do with the way the transformer control voltage in alternating current?
Transformer coils are normally used to step down power from high power lines to a power you can actually use in your house. This works through the ratio of windings on a coil to the windings on the output side.
How does a scrap heap electromagnet work?
An electromagnet can be used a couple of ways. It can be used on the end of a crane, to pick up large pieces of metal to be moved into shredders, or restacked for transportation, crushing, etc. It can also be used to separate metal from non-metal pieces. Usually, these types of magnets are on a conveyor belt, and will cull metal from, say, plastics or other non-ferrous metals such as copper, and aluminum.
What is an electrical device that changes the voltage of electricity through the use of two sets of coils.?
The electrical device is a transformer.
An electric motor turns because the electricity passing through its coils produces?
An electric motor turns because its coils are present between the poles of a strong magnet or electromagnet. Whenever a current passes through a wire in a magnetic field, the wire moves. The electromagnet and the copper coils are arranged in such a manner that when a current passes through the coil an armature linked to the coil rotates.
What factors control the strength of an electromagnet?
The strength of an electromagnet is determined by the density of coils surrounding the magnet, and the rate of current passing through those coils.
Why does an AC wattmeter require polarity marking?
To ensure that the relative directions of the current passing through the current and voltage coils result in the meter reading 'upscale'.
How the magnetic field of an electromagnet defends on the current and the number of coils?
The magnetic field of an electromagnet is directly proportional to both the current passing through its coils and the number of coils. Increasing either the current or the number of coils will result in a stronger magnetic field, while decreasing them will weaken the magnetic field. This relationship is described by Ampere's law and the concept of magnetic flux.
What happens to an electromagnet when electricity runs through it?
When an electric pulse runs through an electromagnet, the current travels in the electromagnets coils, causing a magnetic field to be developed inside and outside of the coils. The amount of coils, tightness of the coils, and the space between the coils are all very important factors in the production of said EM field.
Which of these must be used to create an electromagnet?
coils of wire, iron, and electric current
What is commutation circuits?
the process of reversing the current through individual armature coils, and then conducting the direct current to the external circuit during the brief interval of time each commutator segment is passing under a brush
What are some ways to increase the magnetic field strength?
Increase the size of the magnet. Increase the current passing through the wires (electromagnets) Increase the number of coils of the wire (electromagnets)
What causes the axle to spin in an electric motor?
Switching the field voltage to the coils forces the magnets to move.
How does an electric generator give electricity?
By rotating a magnet inside of coils of wire. The magnetic lines of flux going through the wires cause a current to flow in the wires.
How is wind made into electicity?
Wind can be made to drive windmills which can cause turbines to rotate. The turbines have electromagnets which move through coils. By electromagnetic induction this generates an electric current.
A device that produces a magnetic field by an electric current?
Any device with an electrical current will create a magnetic field. A tube of wire coils with a current running through it is called a solenoid and it will produce a magnetic field through the inside of the tube, as well as around it... Sorry, not much for physics.
