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What change do you think there would be in the magnetic fied if the current went down instead of up the wire?
Wiki User
∙ 10y ago
I think the direction of the magnetic field at every point would
flip to the exact opposite direction. I could be wrong.
Wiki User
∙ 10y ago
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What is the difference between magnet and magnetic and magnatism?
A magnet is an object that is magnetic if it displays magnetic properties. Think of it like this; If bar magnet attracts a piece of metal towards it, it is using magnetism (fluxuations in electric current) and therefore the magnet can be said to have magnetic properties.
How do electromagnets differ from regular magnets?
A regular magnet achieves its magnetic field due to the alignment of its component atoms. An electromagnet induces a magnetic field through an electric current that travels around a conductive core.
Strong temporary magnet formed when a current is passed through a coil of wire?
A magnetic field.
What are the way to demagnetize a magnetic material?
I don't think any chemicals can do that. Magnetism can change how electrons are exchanged (it has to be one extreme magnet though). But I have never heard of anyone lessening magnetic force with chemicals.
What occurs when an electric current is made by a changing magnetic field?
We might call it induction, magnetic induction, or electromagnetic induction, depending on what kind of setup we were inspecting. It is the phenomenon of induction that allows a moving magnetic field to cause (induce) current flow in a conductor. A link can be found below for more information.
Is copper wire is magnetic?
it produces a magnetic field. i think that if current is passed through the wire it can attract pieces of iron
How eddy current changes the coil resistance and impedance?
When an AC generator provides an alternating current to the coil will induce the magnetic filed around it. This is called primary magnetic field. The impedance is nothing but the opposition to the current flow. The coil will have resistance as well as inductance. When this coil is brought to near any conducting material, due to the primary magnetic filed the eddy currents will develop in the material. The magnetic filed which will induce in the material is called secondary magnetic field due to the eddy current secondary magnetic field will try to oppose the primary magnetic field due to any change in the eddy current pattern. Once primary magnetic filed gets affected in the coil definitely there will be a change in impedance in terms of resistance and inductance.You can think of eddy currents as current flowing in the wrong direction (across laminations in transformers, for example). This energy is effectively lost, causing a higher loss, increasing the resistance. Eddy currents will have a minimal effect on impedance, since this is typically much larger than the resistance (note impedance is the resistance and reactance of the coil, reactance will typically dominate).
What is the difference between magnet and magnetic and magnatism?
A magnet is an object that is magnetic if it displays magnetic properties. Think of it like this; If bar magnet attracts a piece of metal towards it, it is using magnetism (fluxuations in electric current) and therefore the magnet can be said to have magnetic properties.
How do electromagnets differ from regular magnets?
A regular magnet achieves its magnetic field due to the alignment of its component atoms. An electromagnet induces a magnetic field through an electric current that travels around a conductive core.
Is copper ferrous?
it produces a magnetic field. i think that if current is passed through the wire it can attract pieces of iron
Strong temporary magnet formed when a current is passed through a coil of wire?
A magnetic field.
How can you strengthen a solenoid's magnetic field?
Think of the four C's- Add more Coils- Add an iron Core- Add a stronger Current- Make the coils Closer
What are the way to demagnetize a magnetic material?
I don't think any chemicals can do that. Magnetism can change how electrons are exchanged (it has to be one extreme magnet though). But I have never heard of anyone lessening magnetic force with chemicals.
Changing magnetic field produces a electric current?
I think it is the other way round and that an electric current produces a magnetic field.This is copied from KS3 bitsize:Magnets and electric current - ElectromagnetsWhen an electric current flows in a wire it creates a magnetic field around the wire.By winding the wire into a coil we can strengthen the magnetic field. Electromagnets are made from coils like this.Making an electromagnet strongerWe can make an electromagnet stronger by doing these things: wrapping the coil around an iron coreadding more turns to the coilincreasing the current flowing through the coil.The magnetic field of an electromagnetThe magnetic field around an electromagnet is just the same as the one around a bar magnet. It can, however, be reversed by turning the battery around. Unlike bar magnets, which are permanent magnets, the magnetism of electromagnets can be turned on and off just by closing or opening the switch.
How do you know that a force is negative or positive in relation to magnetic field?
It depends on what direction is considered positive and what direction is considered negative. For this case, I'll assume that up, right, and outward are positive and down, left, and inward are negative. Since the force is perpendicular to the magnetic field, the sign for the force depends on the direction of the current. If the current is inward and the magnetic field is to the left, then the force is upward and thus positive. If the current would be outward and the magnetic field would be still to the left, then the force is downward and thus is negative. The best way to think of this is to use the "right-hand" rule. Use your index finger to represent the direction of the current, your thumb as the direction of the force, and the other three fingers as the direction of the magnetic field direction.
Is magnetic field strength directly proportional to the coil or the current?
The strength of a magnetic field won't be directly proportional to the turns in the coil. It is more correct to say that field strength is directly proportional to current through the windings of the coil. There are some "limiting factors" that will not allow this to be a hard and fast rule, but it is essentially correct.AnswerMagnetic field strength (symbol: H) is defined as the magnetomotive force per unit length of a magnetic circuit. As magnetomotive force is the product of the current flowing through a winding and the number of turns, then, yes, magnetic field strength is proportional to both the current and the number of turns -but this is ONLY true over the straight part of the magnetisation curve (i.e. before it goes into saturation).
Why is excitation necessary for synchronous generators?
generators work by rotating a magnetic field thru a wire shell or by rotating wire thru a stationary magnetic field (think of a small DC motor with magnets around the shell) since large generators dont have magnets in them (its not very efficent)you have to send a flowing current thru the rotating coils to produce the magnetic field. this induces current in the stator and you have a generator..of course the same effect is produced by inducing a current in the stator and pulling the output from the rotor.
