How does coiling a wire affect the magnetic field generated by an electromagnet?
A Very strong Magnet the magnetic field is strengthened the magnetic field in a coil has an overall effect similar to a "bar" magnet i.e. Specifies N and S Coiling a wire increases the magnetic field of an elctromagnet because the magnetic field around a wire is circular and perpendicular to the wire Each turn of the wire reinforces the field of the one next to it.
It is fairly easy to build an electromagnet. All you need to do is wrap some insulated copper wire around an iron core. If you attach a battery to the wire, an electric current will begin to flow and the iron core will become magnetized.
When the battery is disconnected, the iron core will lose its magnetism. Some of the copper wire needs to be exposed so that the battery can make a good electrical connection. Use a pair of wire strippers to remove a few centimeters of insulation from each end of the wire.
Neatly wrap the wire around the nail. The more wire you wrap around the nail, the stronger your electromagnet will be. Make certain that you leave enough of the wire unwound so that you can attach the battery.
When you wrap the wire around the nail, make certain that you wrap the wire all in one direction. You need to do this because the direction of a magnet field depends on the direction of the electric current creating it. The movement of electric charges creates a magnetic field.
If you could see the magnetic field around a wire that has electricity flowing through it, it would look like a series of circles around the wire. If an electric current is flowing directly towards you, the magnetic field created by it circles around the wire in a counter-clockwise direction. If the direction of the electric current is reversed, the magnetic field reverses also and circles the wire in a clockwise direction.
If you wrap some of the wire around the nail in one direction and some of the wire in the other direction, the magnetic fields from the different sections fight each other and cancel out, reducing the strength of your magnet. Attach one end of the wire to the positive terminal of the battery and the other end of the wire to the negative terminal of the battery. If all has gone well, your electromagnet is now working!
Don't worry about which end of the wire you attach to the positive terminal of the battery and which one you attach to the negative terminal. Your magnet will work just as well either way. What will change is your magnet's polarity.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.
Related Questions
How do you wire a light fixture that has a white wire black wire and a ground wire if you only have a white wire and a black wire coming from the wall?
Where do you connect the fuse cable wire from a car stereo you have a Red wire that is the live a black wire that is earth and a yellow wire that is for fuse where do you connect the yellow wire too?
How does a tangent at any point on the magnetic field line show the direction of magnetic field at that point?
When installing a Y-shaped electric range plug and it has places for three wires and you have a black wire white wire and a bare copper wire so which wire goes where?
Red wire,black wire,white wire,green wire, which is live?
Question about spoofing via an iPod and electromagnet. But with a different magnetic strip?