1-3: Practice with right-hand rules and visualizing magnetism problems. Easy if you "get it". Not if you don't. Be sure to get it because you will see something similar to this on an exam and it is supposed to be a very simple problem!

4: moderate difficulty problem that combines mechanics with magnetism … great for an exam!

5: low to moderate difficulty

6: more difficult problem that requires use of Law of Biot-Savart integral. Not bad to evaluate but hard to see how to set up probably.