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hi everyone, i am not sure if here is right place to ask but i am just wondering whether you can go to toilet during your HSC or Trial exams? is it allowed or not. can someone answer this question please. thanks

hi, does anyone know where can i buy armature, split ring commutator, brushes for DC motor? please tell me. thanks

i need to build a motor for my school and i am thinking of using electromagnet or permenant magnet. for electromagnet where i can buy iron and where can i buy powerful permenant magnet. and where should i buy coils and other equipments? would dick smith have all i need?