A velocity selector consists of a charged particle passing through crossed electric and magnetic fields. The forces exerted by these fields are in opposite directions, and only particles of a certain velocity will move in a straight line. In a velocity selector, the particles move toward the north, and the magnetic field is directed to west. What direction should the electric field point ? South West East Up North Down

A velocity selector consists of a charged particle passing through crossed electric and magnetic fields. The forces exerted by these fields are in opposite directions, and only particles of a certain velocity will move in a straight line. In a velocity selector, the particles move toward the north, and the magnetic field is directed to west. What direction should the electric field point ? South West East Up North Down