Please provide detailed definitions along with examples wherever applicable. Do justify each of the headers with explanation and description that is comprehensive and complete.
a) AC/DC current;
b) Series and Parallel Circuits;
c) Magnetic Domains;
d) True North and South poles & Magnetic North and South Poles;
e) Ohm's Law;
f) Electricity;
g) Supermagnets;
h) Reflection and Refraction of Light waves;
I) Electromagnetic Spectrum.