Part A Your employer asks you to build a 25-cm-long solenoid with an interior field of 4.3 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 diameter of 1.02 mm and has a maximum current rating of 6 A. Wire with a #26 gauge is 0.41 mm in Which wire should you use? diameter and can carry up to 1 A. O #18 O #26 Submit Request Answer Part B What current will you need? Express your answer to two significant figures and include the appropriate units. HA FOE ? I = Value Units Submit Request Answer Provide FeedbackPart A The uniform 30.0 mT magnetic field in the figure points in the positive z-direction. An electron enters the region of magnetic field with a speed of 4.80 x10 m/s and at an angle of 30" above the xy-plane. (Figure 1) Find the radius r of the electron's spiral trajectory Express your answer with the appropriate units. Value Units Submit Request Answer Part B Find the pitch p of the electron's spiral trajectory. Express your answer with the appropriate units. Value Units submit Request Answer P 30