1/00Force current1/8FORCE ON A CURRENT IN A MAGNETIC FIELDPURPOSE:To study the force exerted on an electric current by a magnetic field.BACKGROUND:When an electric charge moves with a velocity v in a magnetic fieldB, it experiences a magnetic force, called the Lorentz force,,(1)which ...
§4.磁场(magnetic field)对电流(electric current)的作用 一.对运动电荷的作用 1.洛仑兹力(Lorentz force):f = q v×B 大小: f = q v B sinθ 方向:右手螺旋法则(right-handed screw rule)( q>0 q<0) 2.运动轨迹(匀强磁场) V⊥B:匀速圆周运动 半径: 周期: 2.磁力矩(magnetic moment) ( 仅...
IB物理 IB Physics 知识点讲解|5.4 Magnitude of magnetic force on a moving charge 42 0 40:12 App IB Physics IB物理 在物理中处理向量 - Manipulate vectors in physics 48 0 08:51 App IB物理 IB Physics 知识点讲解|5.4 Magnetic field by a solenoid or single loop 121 0 12:45 App IB Phy...
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] ...
When a current carrying conductor is placed at right angles to a magnetic field, it is found that a force acts on the conductor in a direction perpendicular to the direction of both the magnetic field and the current. Explanation Consider a straight conductor carrying a current of I amperes....
The spherical rotor is suspended by ultrasonic and is very high speed under surrounding magnetic field. 利用超声悬浮使球形转子悬浮起来,然后通过磁场使球形转子高速旋转. 来自期刊摘选 15. It can also be well used for the dynamical levitation force and magnetic field measurement. 该套测试装置,将工作效...
IB物理 IB Physics 经典例题讲解|5.4 之 Magnetic force experienced by a moving charge 33 -- 8:56 App IB物理 IB Physics 知识点|5.4 Magnetic field by a current-carrying single loop of wire 58 -- 43:57 App IB物理IB Physics真题讲解|5.4 Magnetic effects of electric currents 11道经典选择题 34...
magnetic field n. A condition found in the region around a magnet or an electric current, characterized by the existence of a detectable magnetic force at every point in the region and by the existence of magnetic poles. American Heritage® Dictionary of the English Language, Fifth Edition. ...
Magnetic field, a vector field in the neighborhood of a magnet, electric current, or changing electric field, in which magnetic forces are observable. Magnetic fields such as that of Earth cause magnetic compass needles and other permanent magnets to lin
When an external magnetic field is applied to a material, these current loops tend to align in such a way as to oppose the applied field. This causes all materials to be repelled by a permanent magnet; however, the resulting force is usually too weak to be noticeable. There are, however...