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What else can I help you with?
What is induction of electric current?
According to Farady's law, whenever the flux linking with the coil changes, emf will induce in that coil.Actually the material should oppose the flux changes, that opposition is the induced current. Induced current will set own flux, opposite to that of the flux changes.For further details, refer lenz law.
When lines of force are cut by what you have electromagnetic induction?
When magnetic flux lines of force are cut by induced voltage between magnetic and electric currents. Electromagnetic induction is created.
Why transformer ratio is secondary winding voltage by primary winding voltage but not primary winding voltage by secondary winding voltage?
The transformer primary winding is connected to the alternating current supply. This causes a varying current in the primary winding, which creates a varying magnetic field in the transformer core. Because the primary voltage is alternating, the flux is also alternating - expanding and contracting, and changing polarity in time with the supply. This alternating core flux 'cuts' the secondary winding/s of the transformer, and induces a voltage in the secondary coil/s. As long as there is a magnetic field that is moving, and a conductor for it to move across, it will induce a voltage in the conductor. While the actual induced voltage depends on the amount of flux, the amount of conductor material and the rate of change of the flux, the actual voltage can be calculated from: Vsec = ((Vprim * Nsec) / Nprim) where V = voltage, N = number of turns of wire in the coil, prim = primary and sec = secondary. Transformers don't work on DC - they give a brief pulse out at switch-on and switch-off, because that's the only times the current is changing and the flux is moving. If you have to transform DC, you use a switching circuit that 'chops' the DC into a series of pulses that simulate AC as far as the 'moving flux' requirements of the transformer are concerned.
Why sine wave is used to generation of electricity?
A sine wave is, theoretically at least, the naturally-generated voltage produced by any rotating machine. This is because the voltage induced into a conductor that rotates within a magnetic field is proportional to the sine of the angle at which the conductor cuts the magnetic flux. In practise, a perfect sine wave is not produced in most practical machines, but it is close enough for practical purposes.
What does a flux density do in a single phase tramsformer?
Answer for USA, Canada and countries running a 60 Hz supply service.In an AC system the voltage alternates 120 times a second. This alternation causes the magnetic field that surrounds the wire in the primary coil to rise and collapse along with the voltage. This magnetic field is also known as magnetic flux. When the flux collapses and rises in the primary winding of the transformer this flux cuts the secondary coils and induces a current to flow in the secondary winding of the transformer. Depending on the amount of coil turns in the secondary, the AC voltage can be higher (step up) or lower (step down) than the primary voltage.
What happens when a coil of wire cuts through a magnetic field?
If the magnetic field is fluctuating, or the coil of wire and magnetic field are moving with respect to each other, then a current is induced in the coil of wire. If the two are stationary and the magnetic field is stable, then no current is induced in the coil. However, if there is a current in the coil, from another source, then the coil and the field will exhibit a relative force that will tend to move the coil with respect to the field.
What happens when a magnet is moved towards a coil?
You will generate electricity. As the wire cuts through the magnetic field.As the magnet is moved, there will be an induced electro-motive force (EMF) which can cause a current in the coil. Once the magnet stops moving, the current will go to zero.
What are the cause of induced emf?
A change in current causes a voltage to be induced into an inductive circuit, which opposes that change of current. This is because the change in current is accompanied by a change in magnetic flux which 'cuts' the conductors and induces a voltage into them.
What changes the flow of electrons in an alternating current?
first of all the voltage doesn't change what changes is the current direction the way they do it is by using magnet . electrons tend to escape from the magnetic field . you can find on you tube how a motor works for better idea.
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 is induction of electric current?
According to Farady's law, whenever the flux linking with the coil changes, emf will induce in that coil.Actually the material should oppose the flux changes, that opposition is the induced current. Induced current will set own flux, opposite to that of the flux changes.For further details, refer lenz law.
An electric current can be genrated by moving a wire coil in a magnetic field?
Yes, an electric current can be generated when a wire coil is moved in a magnetic field due to electromagnetic induction. As the coil cuts through the magnetic field lines, it creates a voltage difference across the ends of the coil, resulting in the flow of electric current. This phenomenon is described by Faraday's law of electromagnetic induction.
Why do you have only 6 volts at positive side of coil on 1987 w250?
The resister cuts the voltage to 6v.. in run pos,Will send 12v to coil in start pos.
How does a generator use electromagnetic induction?
There is a motor in a generator which carries out this electromagnetic induction,as we switch on the generator the magnetic field lines between that motor get cuts off by the rotating coil which cause change in flux and change in flux cause induced emf,cue to emf at different points of coil cause current to get flow and then generator will get on.
When lines of force are cut by what you have electromagnetic induction?
When magnetic flux lines of force are cut by induced voltage between magnetic and electric currents. Electromagnetic induction is created.
When lines of force are cut by a conductor you have magnetic?
Presumably, you are asking what happens when a conductor 'cuts' lines of magnetic flux? If so, then a voltage is induced across the ends of that conductor.
How potential relay works in refrigeration?
A potential relay operates on the voltage potential created by the induced voltage in the starting winding of the motor. It is an electromagnetic switch whose coil is wired directly in to the motor circuit. When power is applied to the circuit, the motor starts . As the motor attains its running speed the start winding acts as an auto generator and the voltage potential produced energizes the relay coil which cuts out the start capacitor and the start winding . The start winding still acts as an auto generator , however , and continues to produce enough power to keep the relay energized.
