I’m in a situation quite _____ yours, also lack of experience. A. different from B. similar to C. similar with D. familiar to 答案:B如图所示,在纸面内有一匀强电场,一带负电的小球(重力不计)在一恒力F的作用下沿图中虚线由A至B做匀速运动.已知力F和AB间夹角为θ,AB间距离为d,小球带电量为q.则( )A. 匀强电场的电场强度大小为E = F/qB. A、B两点的电势差为Fdcosθ/qC. 带电小球由A运动至B过程中电势能增加了FdsinθD. 若带电小球由B向A做匀速直线运动,则F必须反向