Answer: I just took the test and got 100%
1: B, unlike poles repel each other
2: D, all of the above
3: A, domain; no
4: D, the angle between true north and north indicated by a compass
5: D, forms circles the go around the wire
6: D, causes alignment of the domains in the iron
7: B, the magnetic field B
8: C, perpendicular to both the current and the magnetic field
9: A, it rotates 180 degrees