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电场强度是静电学中极其重要的概念,也是高考考点分布的重点区域之一.2013年高考全国新课标理综卷第15题就是求电场强度,此题用常见的定义式法、点电荷场强公式法、匀强电场公式法无法求解,那么求电场强度还有哪些非常规方法.一、真题呈现题目:(2013年全国)如图1,一半径为R的圆盘上均匀分布着电荷量为Q的电荷,在垂直于圆盘且过圆心c的轴线上有a、b、d三个点,a和b、
Electric field strength is an extremely important concept in electrostatics, but also one of the key areas of the college entrance examination sites distribution .2013 college entrance examination of the National New Science Volume 15 is to find the electric field strength, the problem with the common definition of law, point charge Field strength formula method, uniform electric field formula method can not be solved, then the electric field strength and what are the unconventional methods. First, the real problem is presented: (2013 in the country) Figure 1, a radius R uniform distribution of the disc Charge of Q charge, perpendicular to the disc and the center of the circle c has a, b, d three points, a and b,