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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.
Do toasters work because of the heating effect of an electric current?
Yes. resistance in wires within the toaster causes those wires to become very hot.
What makes an electrognet stronger that a solinoid?
The strength of an electromagnet is determined by the number of coils wrapped around the core and the amount of current passing through the coils. A solenoid is a type of electromagnet that consists of a coil of wire wrapped around a core, so the strength of the solenoid can be increased by increasing the number of coils or the current passing through the coil.
What must happen for an electromagnet to have a magnetc field?
An electromagnet must have an electric current passing through its coils to generate a magnetic field. The magnetic field is created as the electric current causes the alignment of the magnetic domains within the core material of the electromagnet, creating a magnetic field around the coil.
Which of these must be used to create an electromagnet?
To create an electromagnet, you will need a coil of wire (usually copper), a source of electric current (such as a battery), and a magnetic material like iron. Placing the coil of wire around the magnetic material and passing an electric current through the coil will generate a magnetic field, turning the setup into an electromagnet.
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'.
What do electro magnets do?
Electro magnets are magnets created by wrapping a conductive wire around a core and passing an electric current through the wire. They produce a magnetic field when the electric current flows through them, which can attract or repel nearby magnetic materials. Electro magnets are used in a variety of applications such as electric motors, speakers, and magnetic resonance imaging (MRI) machines.
How is a generator and a electromagnet alike?
Both a generator and an electromagnet involve the use of coils of wire with an electric current flowing through them. In a generator, the motion of the coil creates an electric current, while in an electromagnet, the electric current produces a magnetic field.
What factors control the strength of an electromagnet?
The strength of an electromagnet is influenced by factors such as the number of coils in the wire, the amount of current flowing through the wire, the material of the core, and the shape of the electromagnet. Increasing the number of coils, current, and using a core material with high magnetic permeability can increase the strength of an electromagnet.
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.
The operation of an electric motor depends on?
The operation of an electric motor depends on the interaction of magnetic fields, passing of electric current through coils of wire (armature), and the resulting electromagnetic forces that cause the motor to rotate. The direction of the current and the arrangement of the magnetic fields determine the direction of the rotation, while the flow of current and the strength of the magnetic fields dictate the speed and torque of the motor.
What changes electrical energy into movement energy?
An electric motor converts electrical energy into mechanical movement energy. This conversion is achieved through the interaction of magnetic fields created by passing electric current through wire coils in the motor. As the magnetic fields interact with the motor's rotor, it causes the rotor to turn, generating movement energy.
