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Magnetic fields are only caused by moving electrons. In the case of a current flow, this is the common experience.
For a permanent magnet, this effect is caused by the alignment of a number of spinning electrons into a magnetic domain. All their spins pointing the one direction.
The magnetic fields and loops on the Sun are caused by currents flowing in the Sun's body. At many thousands of degrees, it is impossible for a magnetic material to exist. This is known as the Curie Temperature - another discovery by Marie Curie - and is the temperature above which a magnetic may be maintained in a material. In essence, the thermal motions of the molecules are too vigorous to permit the creation of aligned magnetic domains.
Wiki User
∙ 11y ago
Wiki User
∙ 12y agoYes. The best example is the electromagnet. A constant current of electrons flow through a copper coil. The arrangement of the coil makes that the magnetic field generated by the moving charges add up to an stronger magnetic field. As a result, the magnetic field is strong enough to attract iron object. In this example, the moving charges are the electrons.
Wiki User
∙ 12y agostalectricitytic e
static electricity
Wiki User
∙ 11y agoMore precisely, this will induce a voltage. If the wire is connected to an external circuit, this can also result in a current.
Wiki User
∙ 7y agoThe moving electrons - whether in a magnetic field or not - ARE an electric current, since an electric current is (roughly speaking) defined as the movement of charged particles.
Wiki User
∙ 14y agoYes, that is how generators work.
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What is the classical explanation of a dc electric current in a metallic wave?
A changing magnetic field always produces an electric field, and conversely, a changing electric field always produces a magnetic field. This interaction of electric and magnetic forces gives rise to a condition in space known as an electromagnetic field.
Does a moving magnetic field produce an electric current?
yes*edit: don't confuse moving with changing. A change in magnetic field strength/direction will induce an electric current.
Can an electric current exert a force on a magnet?
In a conductor - only if the field is moving, thus changing.
What happens with the energy associated to the magnetic field of a coil with electric current if the electric current is turned off?
The magnetic field or energy associated with the magnetic field will no longer be generated if the current is turned off.
Can an electric current produce a field magnetism around it?
yes. electric current low always generates a magnetic field.
How electric current have magnetic effect?
The magnetic force acts only on moving electric charges; A constant electric current produces an unchanging magnetic field and a changing electric current produces a changing magnetic field.
Does an electric current produces a magnetic field?
yes*edit: don't confuse moving with changing. A change in magnetic field strength/direction will induce an electric current.
What is the classical explanation of a dc electric current in a metallic wave?
A changing magnetic field always produces an electric field, and conversely, a changing electric field always produces a magnetic field. This interaction of electric and magnetic forces gives rise to a condition in space known as an electromagnetic field.
What Changing a magnetic field can produce an electric current?
its a fact which was observed by faraday
Does a moving magnetic field produce an electric current?
yes*edit: don't confuse moving with changing. A change in magnetic field strength/direction will induce an electric current.
Can an electric current generate an electromagnetic wave?
Not a constant electric current but a changing one will generate electromagnetic waves.First: If you have a lone electron, and it is accelerated in any way, it will send off an electromagnetic wave. This is because a changing electric field generates a magnetic field.It is also true that changing magnetic field will generate an electric field. This is the reason that if you have an electric current, which is generating a magnetic field, and you change the current you generate an electromagnetic wave. To generate a continuous sinusoidal electromagnetic wave you continuously change the current sinusoidally.
British scientist who discovered that a changing magnetic field can produce an electric current?
faraday
British scientist who discovered that a changing magnetic field produces an electric current?
faraday
Why a current wire deflects a magnetic needle placed near it?
A current wire deflects a magnetic needle placed near it because the current wire is creating an electric field. If the current is supplied from an AC (alternating current source as opposed to DC which is direct current- AC would be from a wall socket, DC from a battery), then the current is constantly changing, so the electric field is constantly changing. A changing electric field results in a magnetic field perpendicular (90 degrees) to it. It is actually the magnetic field that is changing the needle direction, because that needle is trying to follow the magnetic field lines (similar to those that you see when you put iron filing near a magnet).
Can a changing magnetic field produce a steady electric field?
Not a steady but a moving electric field can be produced by ever changing magnetic field.
A moving magnet produces an electric current is this true?
A changing magnetic field produces an electric current, so yes. This is true.
Why is a vibrating electric field an example of an electromagnetic wave?
The changing electric field will produce a magnetic field; the changing magnetic field will cause an electric field; both will propagate as a wave - an electro-magnetic wave.
