how to make a magnet without bar magnet
Answers
Answer:
here you have a class 12th answer hope it helps you. .. please mark as brainiest
Explanation:
You need a rod made of steel, iron or some other material that can be magnetized. (Hint: There aren't many other choices.) A 10d or larger steel nail is perfect. If you aren't sure it's steel, use a small magnet to test it. You also need a foot or two of insulated copper wire and a power source, such as a D-cell battery or a low-voltage transformer that you can plug into an outlet. If you opt for a transformer, be sure it has terminals to which you can connect wires.
To magnetize the nail, wrap the wire around it, forming as many coils as you can. It's fine to overlap the wire on top of coils you've already wound. The strength of the inductive field – and your magnet – increases as you increase the number of coils, so be generous. Leave the ends of the wires free, and strip off an inch of insulation so you can connect them to the power source.
Hook up the wires to the power source and turn on the power. Leave the power on for a minute or so and then turn it off. Test the nail by holding it over some iron filings. It should now be magnetized and attract the filings, even when the power is off.