Friday, March 5th. Today we made electromagnets by wrapping wire around bolts and tested their strength by seeing how many paperclips they could lift. We found that increasing the number of windings we were able to pick up more paperclips. We also made model DC motors with magnets and loops of wire. It took some tweaking, but we were able to get most of them to run pretty smoothly. We looked at how we might increase the strength/speed of the motors by increasing the number of windings, increasing the voltage, or by increasing the strength of the permanent magnets.
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