Incorrect. The velocity is parallel to the magnetic field, so the magnetic force
ID: 1264864 • Letter: I
Question
Incorrect. The velocity is parallel to the magnetic field, so the magnetic force is zero. This situation does not give rise to a net force that has the largest possible magnitude. The drawing shows three possible directions for the velocity v of a positively charged particle moving through a uniform electric field E (directed out of the screen, toward the reader) and a uniform magnetic field B. In which direction, 1, 2, or 3, is the magnitude of the net force (the combined magnetic and electric forces) the greatest?Explanation / Answer
The force of the electric field on the positive charge is out of the page.
Thus, the net force is greatest if the magnetic field also gives an out of the page force on the charge.
Thus, that will on the DOWNWARD CHARGE, CHARGE 3 [answer]