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以一道模拟试题为例,讨论带电体在有理想边界复合场中的运动情况,分别从牛顿运动定律和功能关系角度分析,得到了相矛盾的结论.指出有理想边界的电场是不存在的,试题命制需注重情境化.
A simulated test is taken as an example to discuss the movement of the charged body in a compound field with ideal boundary. From the point of view of Newton’s law of motion and function, the contradictory conclusion is obtained. It is pointed out that the electric field with ideal boundary does not exist, The test questions should pay attention to contextualization.