who conductive test?
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Early scientists who worked with electricity found that current flows through some materials and not others. The electrical conductivity tester will allow you to identify those materials that are electrical conductors and those that are not conductors.
Materials you will need:
Energizer® Power Pack
Bulb holder
3 volt flashlight bulb
Number 22 gauge insulated wire with approximately 1" of insulation stripped off both ends
1. Connect the positive side of your power pack to the bulb holder and another wire to the other side of the bulb holder. Your conductivity tester is now ready to be used.
(Figure 1)
2. Gather different household items to determine if they conduct electricity. Some examples of items to try are pencils, paper, copper, screws, screw drivers, etc. (Figure 2)
3. Touch the ends of wires to the different objects. If the bulb lights, you have completed the circuit, showing that the object is a conductor. (Figure 3)
You have gained knowledge about the materials tested which can be used as you design new ways to use electrical portable power. Keep a record of your findings
