Part A Your employer asks you to build a 30-cm-long solenoid with an interior field of 4.0 mT The specifications call for a single layer of wire, wound with the coils as close together as possible. You have two spools of wire available. Wire with a #18 gauge has a Which wire should you use? diameter of 1.02 mm and has a maximum current rating of 6 A. Wire with a #26 gauge is 0.41 mm in diameter and can carry up to 1 A. O #26 #18 Submit Request Answer Part B What current will you need? Express your answer with the appropriate units. HA O C . Value Units Submit Request