Electromagnet Construction and Testing

This video tutorial guides viewers on how to make an electromagnet at home. It begins with an introduction to the materials needed, such as an iron bolt and copper wire. The tutorial then provides step-by-step instructions on winding the wire around the bolt, securing it with tape, and removing insulation. After preparing the wire, the video demonstrates how to connect a power source, specifically a 3.7v Li-ion cell, to the electromagnet. The tutorial concludes with testing the electromagnet's strength and offers tips on adjusting its power. Viewers are encouraged to try making their own electromagnet and to engage with the channel by liking, sharing, and subscribing.

What is the first material you need to start making an electromagnet?

• A steel plate

• A long iron bolt

• A plastic rod

• A wooden stick

How should the copper wire be wound around the bolt?

• Loosely with large gaps

• Tightly with close turns

• In a zigzag pattern

• In a spiral with wide spacing

What is used to hold the wire winding in place on the bolt?

• String

• Tape

• Rubber bands

• Glue

What tool is used to remove the insulation from the wire?

• A knife

• A file

• Sandpaper

• Scissors

Which power source is used to test the electromagnet?

• AA battery

• Solar panel

• 3.7V Li-ion Cell

• 9V battery

How can you increase the strength of the electromagnet?

• By using a weaker power source

• By using a shorter wire

• By decreasing the number of wire turns

• By increasing the number of wire turns

What should you do if you enjoyed the video?

• Ignore it

• Dislike it

• Report it

• Like and share it