Magnetic field

A vector field produced by moving electric charges and magnetic materials that exerts forces on magnets and moving charges. Its direction and strength vary across space and time.

Lorentz force: The force on an electric charge due to electric and magnetic fields. It specifies how a magnetic field deflects moving charges.
Electric current: The rate at which electric charge flows through a surface. Current is a common source of magnetic fields.
Electromagnetic induction: The production of electromotive force by changing magnetic flux. Changing fields induce voltages in generators and transformers.
Electric field: A vector field exerting forces on electric charges, whether stationary or moving. It acts on stationary charges, unlike the magnetic part of the Lorentz force.
Biot–Savart law: A law calculating the magnetic field generated by steady electric currents. It gives the field produced by a current in a wire.
Electric charge: A fundamental property of matter that causes electromagnetic interactions. Moving charge produces magnetic effects, while stationary charge produces electric fields.
Electric generator: A device that converts mechanical energy into electrical energy through electromagnetic induction. Rotating conductors in a magnetic field generate electrical power.
Electromagnetic field: The unified physical field comprising electric and magnetic components. A magnetic field is one component of this broader field.
Ampère's circuital law: A relation between magnetic fields around a closed path and the electric currents passing through it. It links circulating magnetic fields to the currents that produce them.
Vector field: A quantity assigning a vector to every point in a region of space. A magnetic field assigns both magnitude and direction throughout space.

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