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. ...
or some combination of each. When a conductor is placed in aBfield perpendicular to the current, the magnetic force on both types of charge carriers is in the same direction. This force, which can be seen inFigure 5, gives rise to a small potential difference between the sides of the con...
§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...
1、14.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 vB 大小: f = q v B sin 方向:右手螺旋法则(right-handed screw rule)( q0 q0)2.运动轨迹(匀强磁场) VB:匀速圆周运动 半径: qRRvmqvB2qBmvR2周期:qBmvRT223.霍尔效应(Hall effect...
The meaning of MAGNETIC FORCE is the mechanical force exerted by a magnetic field upon a magnetic pole placed in it.
antiferromagnetism- magnetic field creates parallel but opposing spins; varies with temperature diamagnetism- phenomenon exhibited by materials like copper or bismuth that become magnetized in a magnetic field with a polarity opposite to the magnetic force; unlike iron they are slightly repelled by a ma...
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
This special case arises when the plasma is so small, relative to the , that the plasma pressure may be ignored, and so only the magnetic pressure is considered. The name "force-free" comes from being able to neglect the force from the plasma.FORCEFREE MAGNETIC FIELDS...
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...