pls answer my question fast...
Answers
You’ll need:
An iron or steel bolt
24 inches of insulated wire
2 D-cell batteries with holders
Alligator clips or tape to hold the wire connections together
Some paper clips or other magnetic items
A journal or paper to take notes and respond to questions
Directions:
1. Wrap the wire in a tight, even coil around the bolt. Leave 3 or 4 inches of wire loose at each end. Keep wrapping the wire until you get to the end of the bolt. There may be as many as 3 or 4 layers of wire all the way up and down the bolt. Your electromagnet should look something like this:
electromagnet
2. Attach one end of the wire to the positive (+) end of one of your batteries. Attach the other end of the wire to the negative end (-) of your battery pack.
3. Try to pick up one of the paper clips with your electromagnet. What happens? Now, unhook one of the wires from the battery. Will your electromagnet pick up a paper clip now? What do you need flowing through the wire to make the iron bolt act like a magnet?
4. How many paper clips will your electromagnet hold? Can you hang clips on both ends of the bolt? Why?
5. How can you make your electromagnet stronger? Try adding more batteries to your battery pack. Make sure all the batteries “face” the same direction in the circuit. Now, how many paper clips will your electromagnet hold?
6. How is the strength of the electromagnet affected by the increase in electricity traveling through the wire?
7. After using the electromagnet, remove the iron nail or bolt. Can the nail still pick things up? How many paper clips or staples can it pick up? Try dropping the nail or bolt a couple of times on the floor. How does this affect whether or not you can pick up any paper clips or staples? How many paper clips or staples can the nail or bolt pick up after being dropped?
Be sure to disconnect your electromagnet when it is not in use. Leaving the wires connected will drain your battery.