Data Sheet

The wire magnet in the preceding circuit is not very powerful because it only has
a few loops of wire, but you can make a better one. Assemble the build-your-own
electromagnet (the thin wire wrapped around an iron core rod, with the ends con-
nected to the 2-spring socket (?1)) using the instructions on page 5.
Connect the build-your-own electromagnet to the preceding circuit as shown here.
Turn on the slide switch (S1) and set the switcher (S6) to the top or bottom posi-
tion. Move the compass around the build-your-own electromagnet and watch how
its needle is attracted.
Switch the switcher between the top and bottom positions
and watch the compass
to see how the magnetic field has changed.
Project 53
Build-Your-Own Electromagnet
How does the build-your-own electromagnet used here compare with the wire
magnet used in the preceding project? Which is more powerful?
How does it compare to the M3 electromagnet used in project 49?
Project 54
Build-Your-Own Electromagnet (II)
Use the preceding circuit. Connect several paperclips into a chain
and hold near the build-your-own electromagnet, studying the at-
traction. See if the electromagnet can pick up paperclips. Lay the
iron fillings case on top of your electromagnet and change the
magnetic field using the switcher (S6).
Your can also try these tests with the wire magnet from project
52.
-53-
SC_STEM1_manual_PRINT.qxp_Layout 1 7/13/17 4:44 PM Page 54