I am making an inductor coil. But I don't have any enameled copper wire, I just have solid copper wire, will this work as a improvisation?
It will work provided you keep the turns apart. Depending on how big your coil has to be you could use a hair comb, or two glued back to back, as a coil former to hold the turns apart by winding the turns into the spaces between the teeth.
If they are open air coils where each turn does not touch the other, you can use uninsulated wire. If the turns touch, you then need insulated wire, enameled wire the best.
Up to a point. since the individual wires aren't isolated, no matter how many windings you wind on your core, the inductor will only have one (thick) winding electrically.
Only if the individual turns of wire are insulated from each other by being spaced slightly apart on a nonconductive form. If the specifications of the coil require that the turns be in physical contact with each other to provide a specific inductance, you will need enamelled wire in order for it to work right. One of the key concepts of building electronic things designed by others is that you use the recommended materials and methods.
