I will have to confirm this with my Physics teacher as I am not a Physics expert, I am rather into Mathematics.
1 iii) If an ammeter is connected in parallel, with dependence on the power settings, the readings received will be incorrect. The ammeter will read the current flowing through the two connected points. Since there is a negligible amount of resistance in the ammeter, it will create a new path around the circuit resulting in a short circuit. If there is sufficient current flowing through the ammeter, the ammeter will be damaged.
Yeah - it's fun. It's interesting as well - like they introduced a new way to solve simultaneous equations (matrices), and there's also a lot more theory and it's all within the realm of pure mathematics. If you like maths - then you're gonna find it interesting. It's difficult in parts, but that's just the beauty of it I suppose =P