论文部分内容阅读
带电体的曲线运动是电场中的重点问题,解答这类问题的关键是分清带电体的受力情况和运动情况,然后选择恰当的规律予以解决. 带电体在电场中除了受到电场力外,一般还要受到其它力的作用.特别是重力,要根据具体情况来定,对于基本粒子像电子、质子、α离子等,除有说明或有明确的暗示以外一般都忽略不计,而对于带电颗粒如尘埃、液滴、小球等一般都要考虑重力的作用.在正确分析带电体受力情况的基础上,根据带电体运动的初始条件,确定其运动规律从而进一步选择适当的物理规律进行解题.
The curve motion of the electrified body is an important issue in the electric field. The key to solving this type of problem is to distinguish between the force condition and the motion condition of the electrified body, and then select the appropriate law to solve it. The electrified body is subjected to the electric field force in addition to the electric field, generally But also by other forces. In particular, gravity, according to the specific circumstances to be determined, for the basic particles like electrons, protons, alpha ions, etc., except with instructions or explicit implications are generally ignored, but for charged particles such as Dust, droplets, small balls, etc. should generally consider the role of gravity. Based on the correct analysis of the charged body’s stress conditions, according to the initial conditions of the charged body movement, determine its motion law to further select the appropriate physical laws to solve the problem .