Part A In the figure, a conducting rod is shown moving in a uniform magnetic field. Which of the following statements are true? X X X X X Check all that apply. O The magnitude of the potential difference in the rod is inversely proportional to the length of the rod. O The magnitude of the potential difference in the rod is proportional to the velocity vof the rod. O The magnitude of the potential difference in the rod is proportional to the strength of the magnetic field. O The free charges in the rod are acted upon by a magnetic force. O An electric field is established in the rod directed from point a to point b.