Physics C : M , E&M

Hello guys, I’m planning to take AP Physics C this May. I’ve got 800 on SAT subject test physics , and I work hard on
studying new material on AP physic C. I use PR and Barron’s for preparing the test. PR is pretty easy to study and understandable; However, the questions from the Barrons are little challenging for me. How is the difficulty of PR compared to the actual test? is harder than the real test? , or is easier than the test?

I heard Princeton better matches the difficulty of the actual test questions while Barron’s, as usual, is quite harder. However, if you were able to get an 800 on the subject test, then it seems like you’re on a good track. Just make sure to solidify all your E&M concepts with the calculus, especially since SAT Physics doesn’t really stress that.