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  2. Biot–Savart law - Wikipedia

    en.wikipedia.org/wiki/BiotSavart_law

    The BiotSavart law [4]: Sec 5-2-1 is used for computing the resultant magnetic flux density B at position r in 3D-space generated by a filamentary current I (for example due to a wire). A steady (or stationary) current is a continual flow of charges which does not change with time and the charge neither accumulates nor depletes at any point.

  3. Helmholtz coil - Wikipedia

    en.wikipedia.org/wiki/Helmholtz_coil

    A Helmholtz pair consists of two identical circular magnetic coils that are placed symmetrically along a common axis, one on each side of the experimental area, and separated by a distance equal to the radius of the coil. Each coil carries an equal electric current in the same direction. [1]

  4. Ampère's circuital law - Wikipedia

    en.wikipedia.org/wiki/Ampère's_circuital_law

    In classical electromagnetism, Ampère's circuital law (not to be confused with Ampère's force law) [1] relates the circulation of a magnetic field around a closed loop to the electric current passing through the loop. James Clerk Maxwell derived it using hydrodynamics in his 1861 published paper "On Physical Lines of Force". [2]

  5. Magnetostatics - Wikipedia

    en.wikipedia.org/wiki/Magnetostatics

    Ampère law; BiotSavart law; Gauss magnetic law; Magnetic dipole; Magnetic field; ... The current going through the loop is . The quality of this ...

  6. Magnetic field - Wikipedia

    en.wikipedia.org/wiki/Magnetic_field

    The magnetic field generated by a steady current I (a constant flow of electric charges, in which charge neither accumulates nor is depleted at any point) [note 8] is described by the BiotSavart law: [21]: 224 = ^, where the integral sums over the wire length where vector dâ„“ is the vector line element with direction in the same sense as ...

  7. Magnetic sail - Wikipedia

    en.wikipedia.org/wiki/Magnetic_sail

    The figure shows the magsail design [4] consisting of a loop of superconducting wire of radius on the order of 100 km that carries a direct current that generates a magnetic field, which was modeled according to the BiotSavart law inside the loop and as a magnetic dipole far outside the loop. With respect to the plasma wind direction a ...

  8. Force between magnets - Wikipedia

    en.wikipedia.org/wiki/Force_between_magnets

    Ampèrian loop model: In the Ampèrian loop model, all magnetization is due to the effect of microscopic, or atomic, circular bound currents, also called Ampèrian currents throughout the material. The net effect of these microscopic bound currents is to make the magnet behave as if there is a macroscopic electric current flowing in loops in ...

  9. Ampère's force law - Wikipedia

    en.wikipedia.org/wiki/Ampère's_force_law

    In magnetostatics, the force of attraction or repulsion between two current-carrying wires (see first figure below) is often called Ampère's force law. The physical origin of this force is that each wire generates a magnetic field , following the BiotSavart law , and the other wire experiences a magnetic force as a consequence, following ...