How does a magnetic field induce an electric current?

If a coil of wire is placed in a changing magnetic field, a current will be induced in the wire. This current flows because something is producing an electric field that forces the charges around the wire. (It cannot be the magnetic force since the charges are not initially moving). that determines the induced current.
A.

Can a magnetic field produce a current?

Even the magnetic field produced by a current-carrying wire must form complete loops. Above, you were told that a loop of current-carrying wire produces a magnetic field along the axis of the wire. Anyone who has used a compass knows that a magnet experiences a force in a magnetic field.
  • How is electricity and magnetism related to each other?

    Electricity and magnetism are closely related. Flowing electrons produce a magnetic field, and spinning magnets cause an electric current to flow. Electromagnetism is the interaction of these two important forces.
  • How magnetic field is produced by moving charges?

    A charged particle moving without acceleration produces an electric as well as a magnetic field. It produces an electric field because it's a charge particle. But when it is at rest, it doesn't produce a magnetic field.
  • Can a magnet retain its magnetism?

    If a magnet is stored away from power lines, other magnets, high temperatures, and other factors that adversely affect the magnet, it will retain its magnetism essentially forever. Modern magnet materials do lose a very small fraction of their magnetism over time.
B.

What is necessary for a magnetic field to produce an electric current?

Magnets are used to generate an electric current. It is often easier to generate an electric current by moving a wire inside a magnetic field. Whether it is the magnet or the wire that moves, the effect is the same. Current is generated as long as the wire crosses the magnetic field lines.
  • How the magnetic field is generated?

    The motion of an electric charge producing a magnetic field is an essential concept in understanding magnetism. The magnetic moment of an atom can be the result of the electron's spin, which is the electron orbital motion and a change in the orbital motion of the electrons caused by an applied magnetic field.
  • How magnetic field is produced by moving charges?

    A charged particle moving without acceleration produces an electric as well as a magnetic field. It produces an electric field because it's a charge particle. But when it is at rest, it doesn't produce a magnetic field.
  • How does electricity and magnetism interact?

    There are also two kinds of electric currents: direct (DC) and alternating (AC). Electricity and magnetism are closely related. Flowing electrons produce a magnetic field, and spinning magnets cause an electric current to flow. Electromagnetism is the interaction of these two important forces.
C.

What does a magnet have to do to produce an electric current?

Inside a generator is a magnet, some electrical wire, and a source of mechanical energy. The mechanical energy moves the wire into the magnetic field of the magnet so that the wire cuts through the magnetic lines of force. As a result, electric current is produced. Electric generators can come in all sizes.
  • Can we create electricity from a magnetic field?

    A magnetic field alone doesn't create electricity. A changing magnetic field does. The Earth's magnetic field does change a tiny bit but not enough to really generate much. The Earth's magnetic field is quite homogeneous over short distances though so the coil would need to move fast and very far to generate much.
  • How a magnetic field is produced by an electric current?

    When a charged particle—such as an electron, proton or ion—is in motion, magnetic lines of force rotate around the particle. Since electrical current moving through a wire consists of electrons in motion, there is a magnetic field around the wire.
  • How do we make electricity from water?

    Both use a power source to turn the propellers of a machine called a turbine. As the turbine spins, it turns a metal shaft connected an electric generator, which is basically a motor that produces electricity. In the case of a hydroelectric dam, it's flowing water that's used as the power source to turn the turbine.

Updated: 2nd October 2019

Rate This Answer

4.7 / 5 based on 3 votes.