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一、一道较难的电场叠加题及其答案习题如图1所示,A,B,C,D,E是半径为r的圆周上等间距的五个点,在这些点上各固定一个点电荷,除A点处的电量为-q外,其余各点处的电量均为+q,则圆心O处场强()A.场强大小为(kq)/(r~2),方向沿OA方向B.场强大小为(kq)/(r~2),方向沿AO方向C.场强大小为(kq)/(r~2),方向沿OA方向D.场强大小为(kq)/(r~2),方向沿AO方向对于上面这道比较难的电场叠加题,我们到处查找答案,多数解答语焉不详。下面是各种答案中相对详细和全面的两种答案:答案一:由点电荷的场强公式可知,各点电荷
First, a more difficult electric field overlay questions and answers to the problem shown in Figure 1, A, B, C, D, E is a radius of r on the circumference of the five equally spaced points, each of these points on a fixed Charge, in addition to point A of the electricity is-q, the rest of the points are the power + q, then the center of the field strength () A. Field strength size (kq) / (r ~ 2), the direction along OA direction B. The field strength is (kq) / (r ~ 2) and the direction is along AO direction C. The field strength is (kq) / (r ~ 2) and the direction is along OA direction. ) / (r ~ 2), the direction along the AO direction for the above this more difficult electric field superposition problem, we find answers everywhere, the majority of the answer is not detailed. The following is a variety of answers in a relatively detailed and comprehensive two answers: Answer one: by the point charge field strength formula shows that the charge