2.
平行的带电金属板\(A\)、\(B\)间是匀强电场,如图所示,两板间距离是\(5cm\),两板间的电压是\(60V.\)试问:
![](https://www.ebk.net.cn/tikuimages/8/2017/600/shoutiniao95/ce35224694d93560490a1b1d0de3e6f7.png)
\((1)\)两板间的场强是多大?
\((2)\)电场中有\(P_{1}\)和\(P_{2}\)两点,\(P_{1}\)点离\(A\)板\(0.5cm\),\(P_{2}\)点离\(B\)板也是\(0.5cm\),\(P_{1}\)和\(P_{2}\)两点间的电势差为多大?
\((3)\)若\(B\)板接地,\(P_{1}\)和\(P_{2}\)两点的电势各是多大?