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一个空间中可以同时存在几种场,如重力场、电场、磁场等.当一个带电粒子进入这个空间后,不同性质的场力会同时作用于带电粒子,带电粒子的运动情况将十分复杂.由于这类题目的求解需要综合运用许多知识,能考查学生的分析推理能力和运用数学解题的能力,因此在高考中也常有这类问题.本文就带电粒子在复合场中几种类型的运动问题的解题方法进行探讨,供参考.
There can be several fields in a space at the same time, such as a gravitational field, an electric field, a magnetic field, etc. When a charged particle enters this space, the field force of different nature will act on the charged particle at the same time, and the motion of the charged particle will be very complicated. The solution of such problems requires the comprehensive use of a lot of knowledge to examine students’ analytical reasoning abilities and the ability to use mathematics to solve problems. Therefore, this type of problem is often found in college entrance examinations. This article deals with several types of motions of charged particles in complex fields. The problem solving method is discussed for reference.