5G20.70-Small Electromagnet

Video: Watch this demo

Instructor’s video

Description: This demonstration uses a small electromagnet connected to a 9V battery to pick up the nails.
You can also show if the electromagnet exhibits hysteresis.

Equipment:

• Electromagnet
• 9V battery
• A few nails

Setup Procedure:

1. Check to make sure the battery and electromagnet work.

Demonstration Procedure:

1. Show that the electromagnet won’t pick up the nails when not connected to the battery.
2. Connect the electromagnet to the 9V battery.
3. Use the electromagnet to pick up some nails.
4. Disconnect the battery and show the students the electromagnet won’t pick up the nails.

 
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