K5 Electrical Properties of Matter
In this section you will find demonstrations and models of ohmic and non-ohmic behaviour of solids, piezoelectricity, and a variety of basic electrical devices.
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K5-01: PIEZOELECTRICITY
Demonstration of a piezoelectric crystal Read More
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K5-02: PIEZOELECTRIC CRYSTAL - AUDIBLE
Demonstrate that a piezoelectric crystal converts electrical impulses into physical vibrations Read More
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K5-03: PIEZOELECTRIC IGNITOR
Show a commercial use for piezoelectricity Read More
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K5-04: PIEZOELECTRIC GUN
Application of piezoelectricity to produce copious quantities of electric charge Read More
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K5-11: BATTERY MODEL
Simple model of a battery using a human as the source of energy Read More
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K5-12 BATTERY AND CURRENT - WORKING MODEL
Model of battery with circuit attached
Read More
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K5-13: ELECTRIC CURRENT - MODEL
Indicate how electrons really flow through a conductor Read More
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K5-14: ELECTRIC CELL
Demonstrate how an electric cell is formed Read More
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K5-16: CARRIER CURRENT DENSITY MODEL
Model the density of carriers crossing a plane Read More
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K5-21: AC PLUG CIRCUIT CHECKER
Check the wiring of 110VAC power sockets Read More
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K5-22: AC PLUG CIRCUIT CHECKER CHECKER
Demonstrate each different kind of wiring error Read More
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K5-23: ROTATING TWO-COLOR LED
Demonstrate that what comes out of a 110 VAC plug is in fact alternating current Read More
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K5-31 OHM'S LAW
Demonstrates relationship between current, voltage, and resistance Read More
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K5-32: RESISTANCE VS DIAMETER AND LENGTH
Determine how resistance varies as a function of diameter and length for the same material Read More
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K5-33 CONDUCTIVITY OF SALT SOLUTION
Shows that pure water is not conducting, but a solution of an electrolyte is conducting
Read More
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K5-34: THERMAL COEFFICIENT OF RESISTANCE IN COPPER
Show that the resistance of copper changes linearly with temperature Read More
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K5-35: RESISTORS AT LN TEMPERATURE
Illustrate materials with both positive and negative temperature coefficients of resistivity Read More
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K5-36: RESISTORS AT LN TEMPERATURE - LIGHT BULB INDICATOR
Demonstrate materials with both positive and negative temperature coefficients of resistance Read More
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K5-41: V-I CURVES FOR OHMIC AND NON-OHMIC DEVICES
Illustrate resistive properties of resistors and diodes Read More
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K5-42: TRANSISTOR
Demonstrate a transistor circuit Read More
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K5-43: NON-OHMIC DEVICE - V VS. I
Demonstrates the non-linearity of the V vs I curve for a diode
Read More
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K5-44: NON-OHMIC DEVICE - LIGHT BULB
Show the change in resistance of a light bulb with temperature Read More
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K5-45: SEMICONDUCTOR MODEL
Model of semiconductor Read More
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