Resistance
K6-52: IMPEDANCE MATCHING - BATTERY AND JOULEMETER
Category: K6 Electric Circuits and Instruments
Purpose:
Demonstrate that the power transmission is maximized when the source impedance and the load impedance are equal.
K6-35: VOLTAGE DIVIDER
Category: K6 Electric Circuits and Instruments
Purpose:
Show how a voltage divider can be used to produce any voltage up to the maximum of the source.
K6-33: WHEATSTONE BRIDGE
Category: K6 Electric Circuits and Instruments
Purpose:
Demonstrate operation of a Wheatstone bridge.
K6-32: POTENTIOMETER
Category: K6 Electric Circuits and Instruments
Purpose:
Find an unknown EMF using a voltage divider.
K6-22: ENERGY CONVERSION - IMMERSION HEATER
Category: K6 Electric Circuits and Instruments
Purpose:
Demonstrate quantitatively the conversion of electrical energy into heat.
K6-21: HEATING IN CURRENT-CARRYING WIRE
Category: K6 Electric Circuits and Instruments
Purpose:
Show the conversion of electrical energy into heat.
K5-45: SEMICONDUCTOR MODEL
Category: K5 Electrical Properties of Matter
Purpose:
Model of semiconductor.
K5-44: NON-OHMIC DEVICE - LIGHT BULB
Category: K5 Electrical Properties of Matter
Purpose:
Show the change in resistance of a light bulb with temperature.
K5-41: V-I CURVES FOR OHMIC AND NON-OHMIC DEVICES
Category: K5 Electrical Properties of Matter
Purpose:
Illustrate resistive properties of resistors and diodes.
K5-34: THERMAL COEFFICIENT OF RESISTANCE IN COPPER
Category: K5 Electrical Properties of Matter
Purpose:
Show that the resistance of copper changes linearly with temperature.
K5-36: RESISTORS AT LN TEMPERATURE - LIGHT BULB INDICATOR
Category: K5 Electrical Properties of Matter
Purpose:
Demonstrate materials with both positive and negative temperature coefficients of resistance.
K5-32: RESISTANCE VS DIAMETER AND LENGTH
Category: K5 Electrical Properties of Matter
Purpose:
Determine how resistance varies as a function of diameter and length for the same material.
K5-35: RESISTORS AT LN TEMPERATURE
Category: K5 Electrical Properties of Matter
Purpose:
Illustrate materials with both positive and negative temperature coefficients of resistivity.
K5-13: ELECTRIC CURRENT - MODEL
Category: K5 Electrical Properties of Matter
Purpose:
Indicate how electrons really flow through a conductor.
I7-21: SUPERCONDUCTOR - MAGNET LEVITATION
Purpose:
Demonstrate levitation of a magnet above a high-temperature superconductor
K5-43: NON-OHMIC DEVICE - V VS. I
Category: K5 Electrical Properties of Matter
Purpose:
Demonstrates the non-linearity of the V vs I curve for a diode
K5-33 CONDUCTIVITY OF SALT SOLUTION
Category: K5 Electrical Properties of Matter
Purpose:
Shows that pure water is not conducting, but a solution of an electrolyte is conducting
K5-31 OHM'S LAW
Category: K5 Electrical Properties of Matter
Purpose:
Demonstrates relationship between current, voltage, and resistance
K4-07 BICYCLE GENERATOR
Category: K4 Motors and Generators
Purpose:
Demonstrates a 110 VAC magnetoelectric generator, and the relationship of work to power output
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K4-01: AC/DC GENERATOR
Demonstrate a simple AC/DC generator Read More
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K4-02 MAGNETOELECTRIC GENERATOR WITH LAMP
Demonstrate a small 110VAC magnetoelectric generator Read More
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K4-04: MAGNETOELECTRIC GENERATOR WITH AC INDICATOR BULB
Show explicitly a generator producing AC output Read More
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K4-05: MAGNETOELECTRIC GENERATOR WITH METERS AND LOADS
An AC generator with rectifier, meters and several loads Read More
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K4-06: MAGNETOELECTRIC GENERATOR WITH CAPACITOR
Demonstrate that the generator is producing electrical energy, and that the capacitor stores electrical energy Read More
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K4-07 BICYCLE GENERATOR
Demonstrates a large scale 110 VAC magnetoelectric generator
Read More
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K4-08: MAGNETOELECTRIC GENERATOR WITH INDUCTOR
Demonstrate how a magnetoelectric generator stores energy in an inductor and how that energy is returned to the generator Read More
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K4-09: BICYCLE GENERATOR - LIGHT BULBs VS CFLs
Compare brightness and power requirements of regular tungsten filament light bulbs and compact fluorescent lamps Read More
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K4-21: ST. LOUIS MOTOR
Demonstrate the structure and operation of a simple motor Read More
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K4-22: DC MOTOR
Show how a DC motor works Read More
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K4-23: AC MOTOR - SYNCHRONOUS
Demonstrate the concept of a synchronous motor Read More
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K4-24: AC/DC MOTOR
Demonstrate the construction and the operation of AC and DC motors Read More
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K4-25: DC MOTOR - HOMEMADE
Illustrate possibly the world's simplest motor Read More
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K4-41: MOTOR-GENERATOR PAIR
Demonstrate that a motor and a generator are the same Read More
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K4-51: UNIPOLAR MOTOR
Demonstrate a very simple unipolar motor Read More
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