Generally, I never buy D'addario strings. They're very tough and can be really painful when its .10 standard tuning. The better string are like GHS, ERNIE BALL, ELIXIR or BLUE STEEL. These basically do well with any gauge (thickness) so try them out and see which one you prefer.
Learn to be a guitarist.
He plucked the strings of his guitar with his nimble fingers. My mother plucked some flowers off the bush.
For a simple electro-magnet use a DC supply.
Yes, but only if you actually know how to write for strings.
Once a guitar has been built and strung, it must be 'set up'. Among other things, this involves setting the 'bridge' of the guitar to a level where the strings will sit at a comfortable level above the frets (this is known as a guitars 'Action'). A guitar is set up to accomodate the strings already on the guitar. If you change from thin strings to thicker strings, they will not sit adequately above the frets. When said strings are played, they will rattle, or buzz, against the metal frets. To rectify this, you should either ask a guitarist to show and explain how to set your bridge, or take the guitar into a shop and ask an assistant to do this for you.
6 strings like normal you weirdo
The rear rotor thickness should be three quarters of an inch, when new. The rotor should not be reused when the thickness is less than one half inch.
Technically its width but if you are talking to someone they should know what you mean by thickness.
No, but you should be very careful to only use it on the strings, and not on the body of the guitar.
nylon
Your Bass Strings are usually fed through a hole at the base of your bass. (The metal fixing at the bottom) one end of your strings should have stoppers at the end, feed the the opposite end through first, then attatch your strings too the tune keys and wind up, Good Luck
I use a micrometer the rotor should have minimum thickness stamped on the rotor is inches or millimeters