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As the magnetic field created by the pinch current is a function of both the density and speed of the charges, this causes the resulting pinch field to be non-linear across the plasma column. This surpasses the growth rate of the kink, sausage and interchange instabilities. The exact conditions that need to be reached to stabilize the pinch is ...
The magnetic field of larger magnets can be obtained by modeling them as a collection of a large number of small magnets called dipoles each having their own m. The magnetic field produced by the magnet then is the net magnetic field of these dipoles; any net force on the magnet is a result of adding up the forces on the individual dipoles.
To concentrate the magnetic field in an electromagnet, the wire is wound into a coil with many turns of wire lying side by side. [2] The magnetic field of all the turns of wire passes through the center of the coil, creating a strong magnetic field there. [2] A coil forming the shape of a straight tube (a helix) is called a solenoid. [1] [2]
The magnetic field of a current loop. The ring represents the current loop, which goes into the page at the x and comes out at the dot. In classical physics, the magnetic field of a dipole is calculated as the limit of either a current loop or a pair of charges as the source shrinks to a point while keeping the magnetic moment m constant.
The magnetic moment and the magnetic field of the electromagnet are proportional to the number of loops of wire, to the cross-section of each loop, and to the current passing through the wire. [ 45 ] If the coil of wire is wrapped around a material with no special magnetic properties (e.g., cardboard), it will tend to generate a very weak field.
The main parameters that characterize the rotating magnetic field created by a three-phase inductor in the working area of the apparatus in the absence of ferromagnetic particles include: the number of pairs of magnetic poles, the angular speed of their rotation; [11] magnitude and speed of rotation of the magnetic induction vector hodograph ...
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A magnetic field (b rc) always exists around the current (I)-carrying conductor. When this current-carrying conductor is subjected to an external magnetic field (B ap), the conductor experiences a force perpendicular to the direction of I and B ap. This is because the magnetic field produced by the conductor and the applied magnetic field ...