Content

• Warning
• What you need

Wrap the insulating copper wire around the iron in one direction. Wrap it in a spiral around the piece of iron to make the wire. Wrap the wire continuously in one direction to generate a strong current.

• It is essential that the wire runs in one direction so that the current also flows in one direction. If you wind the wire in different directions, currents will flow in different directions, and electricity will not produce a magnetic field.

Push the rings together while wrapping. Wrap the wire tightly around the piece of iron, forming several helices for the strongest current. While wrapping, use your fingers to push the rings together. Continue to wrap and push the wire together until the end of the piece of iron.

• The more wires you use, the stronger the current will be, so be careful when creating electromagnets.

Cut the wire and leave a 5-8cm excess. After wrapping to the end of the piece of iron, use scissors or pliers to cut the wire from the coil. Cut this second end as long as the first, so that the two ends are connected to the battery balance. advertisement

Part 2 of 3: Shave off the insulation at the ends

1. 

   Shave off a piece of insulation about 1-2 cm long from the ends of the wire. Use scissors, sandpaper, or a razor to remove the insulation from each end of the wire. This helps in better electrical wiring.
   • After removing the insulation, the wire will change from the copper of the insulation layer to the natural silver color of the wire.

2. 

   
   
   Twisted the ends of the string to make a small circle. Use your finger to bend the end of the string into a small circle with a diameter of about 0.5cm. These two circles will contact the center of the battery.
   • Wrapping the wire in a circle will keep the battery and wire in good contact with each other.

3. 

   Connect the two ends of the wire to each end of a size D battery. Find a size D or 1.5 volt battery, and connect each end of the wire to one end of the battery. Stick tape or electrical tape over each end of the wire to keep it in place.
   • Attach one end of the wire to the negative terminal of the battery, the other end attached to the positive terminal.

4. 

   
   
   Check the magnet while holding the two ends of the wire connected to the battery. Once you have firmly grasped the battery with the power cord, try the magnet! Hold the battery pack with the iron pad close to a small metal object, such as a paper clip or a needle. If a nail, screw, or bolt sucks the metal, the magnet is working.
   • If the battery becomes hot, lay a cloth to keep the battery and the power cord in contact.
   • When you have finished the experiment, separate the two ends of the wire from the battery.
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Part 3 of 3: Increase the suction power of the magnet

1. 

   Find a larger piece of metal to create a stronger magnetic field. Instead of a nail, use a metal rod about 30cm long and 1cm in diameter. Remember to use that metal rod with a battery pack to create a stronger magnet. You will have to use a much larger amount of copper wire to wrap all the bars.
   • Wrap the copper wire tightly around the metal rod for good current transmission.
   • If you are using a larger metal rod, you only need to wrap it around a section of the metal bar for safety.
   • Use electrical tape to connect the two ends of the wire to each end of the battery.

2. 

   Wrap more loops of the wire for a stronger magnet. The more turns you wrap, the stronger the current will be. Buy a large copper coil and wrap as many loops as possible around the nail or screw to create a strong magnet, adding overlapping turns of wire if desired.
   • Use a small piece of iron for this experiment, such as a nail, screw or bolt.
   • Wrap the copper wire around the piece of iron in one direction.
   • Use duct tape or electrical tape to attach the ends of the wire to the ends of the battery.
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Warning

• Never use high voltage current as it may result in electric shock.
• Do not try to insert the end of the cord into the electrical outlet. High-voltage electrical current will pass through the wire and create a very strong current, which can cause an electric shock.

What you need

• Iron bolts, screws or nails
• Copper wire has insulation
• D-size battery
• Cutting pliers
• Sandpaper or razor knife
• Metal objects (tape needles, paper clips, etc.)
• Battery pack (optional)
• Large metal plate (optional)