作图
a. 如图所示,A、B是电场线上的两个点,在图上标出:
![](https://img.xkw.com/dksih/QBM/2021/11/7/2845999494258688/2847733902893056/STEM/195ec0b5-aae0-4501-9015-04853b3d91aa.png?resizew=138)
(1)A点的电场强度
的方向;
(2)把一个负电荷放在
点时所受电场力
的方向。
b. 初速为
、带正电的点电荷
,在点电荷
的电场中的运动轨迹如图中虚线所示:
![](https://img.xkw.com/dksih/QBM/2021/11/7/2845999494258688/2847733902893056/STEM/1c4ea21b-9d8f-4569-9514-170286c97200.png?resizew=156)
(1)在括号内标出点电荷
的电性;
(2)在图中画出过
点的一条电场线(注明方向)。
a. 如图所示,A、B是电场线上的两个点,在图上标出:
![](https://img.xkw.com/dksih/QBM/2021/11/7/2845999494258688/2847733902893056/STEM/195ec0b5-aae0-4501-9015-04853b3d91aa.png?resizew=138)
(1)A点的电场强度
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d901f94e6a8805b640c335de4df7f47.png)
(2)把一个负电荷放在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eab0c41f554fda1253bd504c6ed8d13.png)
b. 初速为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f58888df91890a19a1aa7511d19703f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://img.xkw.com/dksih/QBM/2021/11/7/2845999494258688/2847733902893056/STEM/1c4ea21b-9d8f-4569-9514-170286c97200.png?resizew=156)
(1)在括号内标出点电荷
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(2)在图中画出过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
21-22高二上·上海黄浦·期中 查看更多[2]
更新时间:2021-11-10 18:48:03
|
相似题推荐
解答题
|
适中
(0.65)
【推荐1】如图,虚线a、b、c是某静电场中的三个等势面,一带正电的粒子射入电场中,其运动轨迹如图实线KLMN所示:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/15/6fd7651b-9c76-4ab8-b2e9-54464efbd2e6.png?resizew=121)
(1)若场源为点电荷,它带什么电?
(2)a、b、c哪个等势面的电势较高?
(3)若Ubc=1000V,粒子的电量为0.1C,粒子在K点动能为200J,则当它到达M、N点时动能分别为多少?
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/15/6fd7651b-9c76-4ab8-b2e9-54464efbd2e6.png?resizew=121)
(1)若场源为点电荷,它带什么电?
(2)a、b、c哪个等势面的电势较高?
(3)若Ubc=1000V,粒子的电量为0.1C,粒子在K点动能为200J,则当它到达M、N点时动能分别为多少?
您最近一年使用:0次
解答题
|
适中
(0.65)
【推荐2】如图甲,
、
是某电场中一条电场线上的两点,一个负电荷从
点由静止释放,仅在静电力的作用下从
点运动到
点,其运动的
图像如图乙所示。
(1)请判断该负电荷在
、
两点电势能的大小以及
、
两点电势的高低。
(2)比较
、
两点电场强度的大小。
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1552707683293dcf684d101dd09b5c9.png)
(1)请判断该负电荷在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/2021/1/28/2645654848389120/2645695255683072/STEM/a4272b88-1993-4096-8bc7-f8dc82c83b36.png?resizew=448)
您最近一年使用:0次