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What type of current is induced in a dc generator when magnets are rotated?
Wiki User
∙ 9y ago
The simple explanation as to why a change in the coil causes a change to the electric current is that the electric field and the magnetic field are the same field and they exist in a four dimensional quaternion space.
Change in a quaternion space is four dimensional and when you take the derivative there is a real derivative d/dr=d/cdt and a vector derivative Del
X= d/dr + Del = d/cdt + Id/dx + Jd/dy + Kd/dz.
The answer to this question is the Quaternion four space derivative of the vector Electric Field, Ev.
(d/dr + Del)Ev= -Del.Ev + dEv/dr + DelxEv = -Del.Ev + dBv/dt + DelxEv
The Quaternion Derivative is X=d/dr + Del = d/cdt + Del
The vector part of the derivative dB/dt + DelxEv is the answer to the question this can be transformed by introducing the coil with dA as the area and dC as the circumference:
dBv/dt.dA + DelxEv.dA = AdB/dt + Integral loop Ev.dC
Wiki User
∙ 14y ago
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Working principle of generator?
An electric generator is a device which converts mechanical energy to electric energy. An electric generator basically works on two principles, they are:- 1. Electro magnetic induction: This was first discovered by Michael Faraday this law states that when a electric conductor moved through a magnetic field cutting the electro magnetic waves, a electric charge is produced in the conductor. 2. Flemming's right hand rule: Place your thumb finger, index finger, and your middle finger in such a way that all the three are mutually perpendicular to each other. Here if your thumb points the thrust or force and index finger points the electro magnetic field then your middle finger points the direction of induced current. An electric generator consists of a electromagnet or a huge horse shoe magnet in which an armature is enclosed. The armature is made of copper coils. Now when the armature is rotated, it cuts the electro magnetic waves generated by the magnet and hence as a result of electro magnetic induction electricity is generated in the armature and the direction of the induced current can be found out using the Flemming's Right Hand Rule. And how the electric current produced later is stored and carried out differentiates between AC generator and DC generator
How can the output voltage of a DC generator's polarity be reversed?
The polarity of DC generator can be reversed by reversing the field current as well as direction of rotation
Why is a motor is a reverse function of generator?
from Faraday's laws its clear that when ever there is change in flux, an emf is produced. in a dc motor there are permanent magnets that produce a magnetic flux. If the shaft of the motor is rotated, which in tern rotates the coil that is placed in the magnetic field. Thus, changing the flux that cuts the coil. since there is change in flux an emf is induced.thus, a dc motor can be used as a generator.
How does an electric generator work?
Converts mechanical energy into electricity. Movement of magnetic field across a conductor will cause electron flow. The windings of a generator are rotated within a magnetic field.
How is an alternating current produced?
EMF is induced in a coil when it is rotated in magnetic field. The magnetic field is obtained in the space between N Pole and S Pole of a magnet. coil is kept on shaft and it is rotated. To take out the current from the coil, two slip rings made of brass are kept on the shaft. The slip rings are insulated from each other and from the shaft. Carbon brushes are placed on the slip ring. EMF is available across these brushes. Load is connected across the brushes. This is called single phase type alternator or AC Generator. In practice three phase type alternator is used. In alternator, used in power stations, armature is kept stationary and field is rotated.
Why there is an induced current in a coil when a coil is rotated between two magnets?
cutting through magnetic lines of force produce electric current.
How do magnets help generator produce electricity?
Magnets would have magnetic flux around. As a coil linked with this magnetic flux is rotated such that the flux would change then an electro motive force is induced. This is the way in which generator functions.
Describe how a simple generator produces electric energy?
A copper wire coil is rotated at speed in a magnetic field, to cause electrons to move. This is the electric current. The stronger the magnets and/or thicker the copper coil, the more current is produced
What ia an altonator?
The correct word is Alternator. An alternator is an electric generator that produces alternating current. The generator's coil is rotated (by a turbine, motor, or other power source), and its circular path causes it to cut cross a magnetic field (set up by strong magnets), first in one direction, then the other, with each cycle. The electric potential induced in the coil by this motion thus alternates between positive and negative once with each cycle, resulting in alternating current. This current keeps the battery charged in an automobile.
Why is there an induced current in a coil when a coil is rotated between two magnets?
One of the laws of physics is that when a conductor moves in a magnetic field a current is induced in that conductor. If you then coil that conductor you effectively end up with several conductors and you'll get more current. Incidentally, you might be better of rotating the coil between the poles of a single magnet (a horseshoe type) rather than between two magnets as you've said in your question, because the two may cancel their magnetic fields out, depending on how they are positioned, whereas one won't.AnswerIt's voltage, NOT current, that is induced into a conductor. Current , resulting from this induced voltage, will only flow providing the conductor forms a complete circuit.
What happens when a coil is rotated between two magnets?
The coil will produce an alternating electric current.
What happens if a coil is rotated between two magnets?
The coil will produce an alternating electric current.
How are magnets used in generators?
There are two types of generators. First is Alternative current generator and second is Direct current generator. In both types of generators horseshoe-type magnets are used. This magnet is used so that when the shaft is rotated in anticlockwise direction the direction of force is upwards and the magnetic field lines are going from north to south or left to right. By using flemings right hand law the current wil flow from west to east. This magnet makes the current to flow in a circuit consistently to produce electricity.
Who invented the generator using the principle that magnets can be used to produce an electri current?
The first dynamo based on Faraday's principles was built in 1832 by Hippolyte Pixii, a French instrument maker. It used a permanent magnet which was rotated by a crank. *wiki
How does a generator convert mechanical energy into electrical energy?
An electric generator is a device used to convert mechanical energy into electrical energy, Which is used to convert mechanical energy into electrical energy. The generator is based on the principle of "electromagnetic induction" discovered in 1831 by Michael Faraday, a British scientist. Faraday discovered that if an electric conductor, like a copper wire, is moved through a magnetic field, electric current will flow (be induced) in the conductor. So the mechanical energy of the moving wire is converted into the electric energy of the current that flows in the wire.
A particular power source creates electricity through the use of giant magnets that are rotated to create a flow of electrons. This electricity is then directed?
An electric generator -apex 😁
What convert kinetic energy into electrical energy?
A generator in a power plant converts rotating kinetic energy into electrical energy. So it is a generatorIn order for Kinetic energy to be converted into electrical energy, the kinetic energy usually drives the rotation or oscillation of a magnet in close proximity to coiled wire. A bar magnet can be moved up and down through the centre of a looped coil of wires. As the wire comes into contact with the magnetic field of the magnet, a current is induced in the wire. (see Left hand rule)Likewise, a collection of magnets attached to a large prop shaft when rotated will induce a current in a large array of coiled wires which surround but do not touch the circled array of magnets.Kinetic energy is essentially converted into electrical energy in most production of electricity. Oil, Gas, Coal or Nuclear energy are all used to heat water; the steam of which turns turbines and therefore the prop shaft. (Chemical energy-kinetic energy-electrical energy)Through a generator shaft........+++I imagine the questioner knows that, but wants to what is on the shaft!An electrical generator is a set of coils of wire so arranged than when rotated they cut across a strong magnetic field, and it is this that induces the current in the windings, extracted by suitable means for feeding it tothe circuit connected to the machine's output.A generator does this by passing a rotating coil of wire through a magnetic field. Electric current is induced in the coil.
