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Electric Circuits - Tech Support
Downloads/Resources:
Instruction SheetSample Investigation
Curriculum Guide Available
Helpful Tips
- Do not store the D-cells in the battery holders. Always remove D-cells from holders when not in use.
- Remember: do not use more than two D-cells in series when lighting bulbs. If you use 3 D-cells in series, the bulbs will burn out very quickly, if not immediately.
- Learning how electricity behaves is much easier, and more fun, if you use a digital multi-meter to make measurements of voltage, current, and resistance.
- Every part in the Electric Circuits equipment module can be ordered separately, please see the spare parts list for more details.
- Batteries are not included. They must be purchased separately.
- Good contact is made at any position on the post. It is not necessary to slide every wire to the bottom of the post.
FAQ's
Q: My students built a simple series circuit, and tried to apply Ohm's law, but the math doesn't seem to give the right answer. What's wrong?
A: If you have built a circuit that contains light bulbs, these components are "non-Ohmic". The resistance of a light bulb changes as it heats up and cools down. Ohm's law should only be applied when using the red, blue and green fixed resistors that come with the kit.
Q: Why don't the electric circuit kits include a digital multi-meter?
A: There are several reasons for this. First, we have found that many schools have a supply of digital multi-meters that they prefer to use with the electric circuits kit. Second, the digital multi-meters that you can use with this kit come in a wide variety of styles and prices. Third, you can perform qualitative electricity experiments without the digital multi-meters. For these reasons, the digital multi-meters are sold separately.
Q: Are the metal posts on the circuit board wired underneath?
A: No! Students must connect the metal posts with the wires provided in the kit when building circuits. This is so there is nothing "hidden" from the students.
Q: Do you have battery holders that can accommodate various battery sizes?
A: All of our investigations are designed using "D" batteries.
Q: Where can I order extra bulbs, wires and other components?
A: Extra components can be ordered by contacting customer service or your regional sales manager.
Q: Can the amount of electricity used in the Electric Circuits be dangerous?
A: No.