安培力公式F=ILB是电磁学中非常重要的一个公式,由于学生对公式理解得不到位,导致在运用时常会出现错误,有的错误虽然不影响计算的结果,但影响对物理本质的正确理解.例如,公式书写顺序问题.笔者在教学过程中发现,学生总是把安培力公式写成“F=BIL”的形式,甚至很多教师也写成这种形式,虽然从表面上看该种写法仅仅是书写顺序的不同,但不利于安培力本质的理解.在普通物理学中,通电直导线的 Ampere force formula F = ILB is a very important formula in electromagnetics. Because students can not understand the formula properly, it often leads to mistakes in application. Some mistakes do not affect the result of calculation, but the influence is correct to the essence of physics For example, the order of formula writing, the author found in the teaching process, students always put the Ampere force formula into the form of “F = BIL”, and even many teachers also wrote this form, although the surface of the species Wording is only written in different order, but not conducive to the understanding of the nature of amp; force. In general physics,