This is what I got with a small analysis. Around 6 mistakes I think.
1. C (Good)
2. B (Tangential velocity VS centripetal force)
3. D (The others are quite incorrect)
4. B (Acceleration does not change in horizontal motion)
5. B (I know it is D. I use T=2piR/v which is incorrect. You should use Kepler's Third Law)
6. A (North meet with north, so the wire will just rotate around)
7. B (May be C if you use Pythagoras to calculate the diagonal length. Can also be D. Not sure)
8. B (I know it is A. Because it is FLUX not EMF)
9. B (Can be D if somehow it is an AC, but still think it is DC. Or A if no current is produced. C is for path of electron (opposite direction from current) so pretty sure C is incorrect)
10. B (I thought because the coil is coiled with some space, so there is 0 volt... How wrong I was. Yes, I know it is either A or C. And I think now that it is A because the secondary in transformer has to be AC)
11. A (Surprisingly easy question)
12. C (Not D because when perpendicular, it means 0 degree and sin 0 is 0 thus affect the magnetic force on particle. When parallel, it means 90 degrees and sin 90 is 1 and anything times 1 is the same, thus NOT affect the magnetic force on particle)
13. D (It decreases and B is incorrect)
14. D (C? A? Don't know... B is incorrect though as persplex does not conduct electricity)
15. D (Stupid of me. It is A for sure. Use c = f times lambda, so to find f, just divide the bloody thing and you get around 1.6 times 10 to the power of 15 which according to graph at 2.5 eV belongs to Aluminium. If you want to know what I did, I times something with Planck's constant and charge of electron)
That's it. Feel free to object any of my comments.