Magnetic Forces on Moving Charges

The magnetic force on a free moving charge is perpendicular to both the velocity of the charge and the magnetic field with direction given by the right hand rule. The force is given by the charge times the vector product of velocity and magnetic field. 自由移动的电荷所受的磁场力垂直于该电荷的速度和磁场，方向由右手定则确定。该力由电荷量乘以速度与磁场的矢量积给出。 Magnetic interactions with charge 带电粒子的磁相互作用 Magnetic force applications 磁力应用 Bending a charge into a circular path 将电荷弯曲成圆周路径

If the velocity is perpendicular to the magnetic field then the force is given by the simple product:

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