NJ
I also find it most surprising you could answer so many of the questions (correctly).
Standard fare in A level papers also includes fields -do you know the left hand rule fron the right?
Without that you'd not questions right about particles moving in fields?
I'm at a loss to explain your ability - you weren't perhaps looking at a GCSE paper?
Try this one from January 2010
http://store.aqa.org....HYA4-2-W-QP-JAN10.PDF
Is it as easy as the one you saw?
Which of them can you answer