First question, what is the direction of electrostatic field?
Here is the problem: Consider a conductor rod CD moving at a speed v in a magnetic field. The three are in right angles to each other. In reference S, rod does not move with the positive charges contained within it. As B is pointing out of the plane, the Lorentz force is in the direction D to C. Electric field is said to be in the direction C to D. Why are they in opposite directions?
In another reference frame, where the rod moves with the charges.
The charges do not experience Lorentz force. Then, the textbook says 'nevertheless the force directed from D to C acts on the charge q so the electric field is induced in the direction D to C'. Where does this force come out in this reference frame?
How does this situation apply to a square coil where one side of the coil experiences a magnetic field? It is easy to think that the opposite sides have emfs in opposite directions but I am having problems with visualising why it is.