Magnetic fields arise from charges, similar to electric fields, but are different in that the charges must be moving. A long straight wire carrying a current is the simplest example of a moving charge that generates a magnetic field. The force a charge feels when moving through a magnetic ...
Homework Statement A wire 1.0 mm in diameter carries 5.0 A distributed uniformly over its cross section. a) Find the field strength 0.10 mm from its...
Force on a Wire in a Magnetic Field, Nature 246, 208 - Lowes - 1973 () Citation Context ... can be calculated via the interaction of the current and magnetization in the wire with only the fields present before the wire was added to the problem, as emphasized in sec. 35 of [18] ...
attraction,attractive force- the force by which one object attracts another electromagnetism- magnetism produced by an electric current; "electromagnetism was discovered when it was observed that a copper wire carrying an electric current can magnetize pieces of iron or steel near it" ...
Force on a Wire in a Magnetic Field An analysis is given of the force acting on a metal or semiconductor wire carrying a current in a magnetic field in terms of the Hall field, diffusion forc... LOWES,F. J - 《Nature》 被引量: 6发表: 1967年 ...
Most formulations become similar in the limit of small magnetic susceptibility. For a susceptibility of the order of 1, as is typical for ferrofluids, the calculated body force from the formulations differed by a factor of about four, greatly affecting thermomagnetic convection predictions for a ...
Magnetic field definition: a region of space near a magnet, electric current, or moving charged particle in which a magnetic force acts on any other magnet, electric current, or moving charged particle.. See examples of MAGNETIC FIELD used in a sentence.
10. The action of the negative pole of a magnetic needle is just as real as the action of the positive pole. 一颗磁针的阴极的作用与阳极是一样的。 11. The effect is that of a force, perpendicular to the plane, acting on the magnetic pole. ...
a small barmagnet. One end of the magnet is called a north pole and the other end a south pole. The force between a north and a south pole is attractive, whereas the force between like poles is repulsive. The magnetic field is sometimes referred to as magneticinductionor magnetic flux de...
An electromagnet is generated by a current flowing through a wire loop at the centre of the field.(more) Magnetic fields may be represented by continuous lines of force or magnetic flux that emerge from north-seeking magnetic poles and enter south-seeking magnetic poles. The density of the ...