• 2021-04-14
    在外加匀强电场E中,一电偶极子的偶极矩与电场夹角为 ,则该电偶极子在外加匀强电场E中( )https://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/42649053cd184f529d158f02464c8181.png