If I had a 2D shape like a star bent from a single length of wire, how could I 'electrify' it - i.e. pass an electric current through it? I assume that I can't just join the ends straight to the 1.5v battery.
I am trying to create a magnetic field and wonder what shape it would have. Would it matter if the wire touched itself as it kept crossing over itself?
2007-12-15 08:07:11 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Physics
I was told you HAD to put a resistor (or something else like a bulb) in the circuit - but not old why or which resistor! - so it could stay switched on for hours. I thought it would just short out otherwise.
I'm mad, of course, but wonder if different shaped fields have different effects on things (a la pyramid powe)r. I know, I know!! Crazy - but I dream and want to experiment!
2007-12-15 09:08:39 · update #1
The best way to build an electro-magnet is to take a length (12 inches) of insulated wire and wrap it around a nail - 10 turns or so - leave about 4 inches of wire free at both ends. Connect both ends of the wire to a dry cell battery.
2007-12-15 08:51:12 · answer #1 · answered by Prophet 1102 7 · 0⤊ 0⤋
You can just connect the ends of the wire straight to the ends of the battery. But leave it connected for very long or the battery will get hot and wear out really fast.
How do you plan to figure out the shape of the magnetic field it will create? Do you have a way of measuring it?
The field can be computed mathematically and displayed with a 3D animation using VPython. Email me if you'd like to work on that.
2007-12-15 08:32:36 · answer #2 · answered by Steve H 5 · 0⤊ 0⤋
They make TVs just for Hotels. But as for security, usually a wall mounted with a pull down feature. The wall mount will be bolted to the back of the unit. Cant fit a socket and ratchet/hand back there to unbolt it. Swivel it down to unbolt it but having a lock built in or put a lock in a place where it will jam it tryed to be swiveled.
2016-04-09 05:17:35 · answer #3 · answered by ? 4 · 0⤊ 0⤋
You can just stick the ends to each side of the battery and get a magnetic field.
For more info, do a Google search on "electromagnets"
2007-12-15 08:14:39 · answer #4 · answered by misterguch 3 · 0⤊ 0⤋