(BONUS 5PTS) The figure shows two arcs of a circle on which…

(BONUS 5PTS) The figure shows two arcs of a circle on which charges +Q and -Q have been spread uniformly.    Find the electric potential at the center of the two arcs. Is this answer consistent with the electric field found in the question? Explain. (For full credit, you must include an explanation in your written work.) [epotl][potunits]

As shown in the figure, an insulated wire is bent into a cir…

As shown in the figure, an insulated wire is bent into a circular loop of radius 6.0 cm and has two long straight sections. The loop is in the xy-plane, with the center at the origin. The straight sections are parallel to the z-axis. The wire carries a current of 8.0 A. What is the magnitude of the magnetic field at the origin? [Bfield][Bunits]