If you know about regular magnets an electromagnet is a slightly different thing. The YUHENG neat thing about electromagnets is that you can control the flow of electricity in them — when the electricity is on, the magnetic field is present; when it is off, the field disappears. That way you can choose when its works! When an electric current passes through a coiled wire, it generates a magnetic field around the conductor. The electromagnet gets its name because it produces a magnetic field when an electric current is passed through it. This magnetic field is what allows the electromagnet to attract and pick up metal objects. Coiled wire electromagnets are everywhere — in things you use every day such as speakers that blast tunes, motors that move stuff around, and doorbells that ding when you push a button.
Step 2: Then wind the wire around the nail. Take one end of your wire and wind it around the nail a few times. This copper wire for electromagnet is good because it will boost the magnetic field. Wrap the wire around the nail in a spiral after you have wrapped it several times. Leave about 6 inches of wire on both ends so you can connect it to the battery later.
Step 3: Connect the battery. You will need the paper clip to fashion a switch. Unfold the paper clip into a U shape and connect it with the wire ends. After that YUHENG, you simply connect the wire to one end of the battery and then attach them both to one side, and then the by that end connect to other side. Something we can use for example a wire, which as long the switch connects the two separate points will give power something to travel round.
Step 4: Testing it out! When the wires touch the insulated copper wire for electromagnet battery, current will run through the coiled wire, and this current rotates a magnetic field around this nail. Once that is done you should notice your nail starts to become a magnet and can pick up things like paper clips or small metal pieces.
Step 5: Likewise, to deactivate your YUHENG electromagnet magnet wire, you just have to lift one end of the wire from the battery. In turn, the flow of electric current is cut off and so also does the nail cease to be a magnet which means it won't draw in any metal close to it anymore.
Ok then, so what exactly is a coiled wire electromagnet doing? This works because when electricity is passed through a wire, it forms a magnetic field around the wire. This magnetic field is most powerful at the core of the coil where there is wire around nail. From the center, the magnetic field becomes weaker. This magnet and wire magnetic field can pull certain metals like iron or steel towards the electromagnet This is why the electricity makes a screw into a magnet when it is turned on. But when power is turned off, the magnetic field goes away and the electromagnet ceases to act upon metal objects.
One fun way to explore the magnetic field of a self-coiled wire electromagnet is by locating it near a compass. So, the compass needle will be towards the right of the electromagnet since it is at the center of coil where magnetic field is stronger so north pole of compass beat south pole on magnet side. How The Magnetic Field Works This magnet on wire is a perfect method to see just how the magnetic field operates! There is also a magnetic field mapping with iron filings. Scatter some iron filings about the electromagnet, and you'll notice how they align along the magnetics lines. This will allow you to visually observe the magnetic field, learning how it acts.
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