Can A changing magnetic field make an electric current?

Answer 1

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.

Answer 2

Yes. 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.

Answer 3

Yes, a changing magnetic field can induce an electric current in a conductor, according to Faraday's law of electromagnetic induction. When a conductor is exposed to a changing magnetic field, it creates a force that moves the electrons within the conductor, resulting in an induced electrical current.

Answer 4

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static electricity

Answer 5

More precisely, this will induce a voltage. If the wire is connected to an external circuit, this can also result in a current.

Answer 6

The 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.

Answer 7

Yes, that is how generators work.