I need help. I am doing this project for school and I need to create an electrical current using copper wire and batteries. How should i connect the copper wires to the AA bateries. I need help. I tried connecting them but the batterie is giving off no heat or anything. The batteries have power in them. They are re-chargeable batteries.
2006-11-18 02:42:48 · 4 answers · asked by Igobeg O 3 in Science & Mathematics ➔ Engineering
use scotch tape
2006-11-18 02:48:09 · answer #1 · answered by Anonymous · 4⤊ 0⤋
You should start with wire of about 24 gauge. This is like the solid telephone wire that runs from jack to jack in your house. It has a conductor diameter about the same as a straight pin. It may give off some heat when connecting each end to the ends of a single AA battery but it probably will require two batteries in series to be noticeable. Very heavy wire may not heat as well or as quickly as smaller wire. Very small wire, smaller than 30 gauge will glow red in a short time if the batteries are in good condition.
In any case it will take about 30 seconds after short circuiting the batteries with the wire for the battery to heat. For a more noticeable effect start with a wire about 24 inches long and wind the center 12 inches around a nail and remove the nail. This will help concentrate the heat generated.
To indicate and prove the presence of current, pass the wire over a compass and watch the needle swing when the wire is connected to the battery. Place a piece of paper over the wire and sprinkle metal filings on it and then observe the magnetic pattern when power is applied.
If your batteries do not get warm when short circuited as in this experiment they may not be in good condition. Most rechargeable batteries are Nickel Metal hydride. These may work better for some things but Nickel Cadmium can deliver more short circuit current for this type of experiment. Batteries in series will give more power. Connect them Plus to Minus. You should see a small spark when connecting the wire to the ends of the batteries in a dark room.
2006-11-18 13:56:15 · answer #2 · answered by Buffertest 3 · 0⤊ 0⤋
Generator itself is made up using copper wire and magnets. So I think I can explain the power generation using a magnet and copper alone. The magnet produces magnetic field around it. Current will be induced in the wire only when there is some relative motion between the copper wire(usually coil) and the magnet. When there is some relative motion between them, the copper wire cuts the magnetic field lines of the magnet. According to michael faraday, the rate of change of magnetic flux produces electric current. In generator also the same thing happens. The coil is wound around the shaft of the generator. which is situated inside a circular magnet. when the shaft rotates, the magnetic field lines gets cut and power is generated
2016-05-22 00:46:19 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Go to RADIOSHACK and get a battery holder...Don't be cheep.
2006-11-18 02:48:06 · answer #4 · answered by spir_i_tual 6 · 0⤊ 2⤋