Question 7 (6 points} (6 marks] Draw the magnetic field lines and indicate the direction of the magnetic field in each of the following. @006 Question 8 (3 points} (3 marks] Describe how you would use the right-hand rule to determine which side of the helix is the North Pole. Indicate the North Pole on the helix in the diagram below. Question 9 (2 points} (2 marks) Use the domain theory of magnetism to explain the difference between a strong magnet and a weak magnet. Question 10 (4 points) (4 marks) The diagram below shows a simple motor. The loop of wire is attached to the split-ring commutator. a. Does the current flow through the wire from A-B or from B-A? b. The current running through the loop will cause it to spin. Will this cause point A to move up or down? How do you know? c. What is the purpose of the split-ring commutator and why must it be used on the motor for it to work properly? Question 6 (2 points) (2 marks] In the two helixes shown below, state whether the current flows from X to Y or from Y to X