# Magnetic field      Vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials.

- Magnetic field 500 related topics ## Electric current

Stream of charged particles, such as electrons or ions, moving through an electrical conductor or space.

Stream of charged particles, such as electrons or ions, moving through an electrical conductor or space.      Electric currents create magnetic fields, which are used in motors, generators, inductors, and transformers. ## Magnetic moment    In electromagnetism, the magnetic moment is the magnetic strength and orientation of a magnet or other object that produces a magnetic field. ## Electric motor

Electrical machine that converts electrical energy into mechanical energy.

Electrical machine that converts electrical energy into mechanical energy.               Most electric motors operate through the interaction between the motor's magnetic field and electric current in a wire winding to generate force in the form of torque applied on the motor's shaft. ## Earth's magnetic field             Earth's magnetic field, also known as the geomagnetic field, is the magnetic field that extends from Earth's interior out into space, where it interacts with the solar wind, a stream of charged particles emanating from the Sun. ## Magnet          A magnet is a material or object that produces a magnetic field. ## Magnetization

Vector field that expresses the density of permanent or induced magnetic dipole moments in a magnetic material.

Vector field that expresses the density of permanent or induced magnetic dipole moments in a magnetic material. Net magnetization results from the response of a material to an external magnetic field. ## Lorentz force

Combination of electric and magnetic force on a point charge due to electromagnetic fields.

Combination of electric and magnetic force on a point charge due to electromagnetic fields.      and a magnetic field ## Hall effect

[[File:Hall effect.png|thumb|Hall-effect:

[[File:Hall effect.png|thumb|Hall-effect:     The Hall effect is the production of a voltage difference (the Hall voltage) across an electrical conductor that is transverse to an electric current in the conductor and to an applied magnetic field perpendicular to the current. ## Vector field

Assignment of a vector to each point in a subset of space.

Assignment of a vector to each point in a subset of space.      Vector fields are often used to model, for example, the speed and direction of a moving fluid throughout space, or the strength and direction of some force, such as the magnetic or gravitational force, as it changes from one point to another point. ## Magnetometer          A magnetometer is a device that measures magnetic field or magnetic dipole moment.

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