the motors topic was my favourite....some things like Lenz's law are confusing at first, but once youve mastered the topic and the basic ideas, the exam questions are all really easy - not much writing and mostly logic.
Thats the bad thing about relativity - you can overthink the questions and send your mind running round in circles.....
In year 11 electricity, there was a fair bit of formula manipulation and interpretation of circuit diagrams to determine voltages and stuff - there is none of that fiddly stuff in motors & generators. There are a couple of simple formulas to remember, but mathematically its a breeze.
Good luck! enjoy the rest of your holiday and don't stress too much