Right Hand Rule for Charge in a Magnetic Field Practice Test

Electrons are rotating counter-clockwise in the plane of the screen. What is the direction of the magnetic field at the center of rotation created by these electrons?

A piece of metal has a motional emf of is moving through a magnetic field going into the page (depicted by the x's) with a magnitude of . The length of the metal piece (vertical length as opposed to horizontal length) is . Find the magnitude of the velocity of the object.