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4A50.20 - Temperature Dependence of Resistance in a Wire

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​4A50.20 - Temperature Dependence of Resistance in a Wire

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Title4A50.20 - Temperature Dependence of Resistance in a Wire
Objective

Demonstrate that electrical current can be temperature dependent in metal. ​

StatusAvailable
Assembly Instructions

Instructions
The semiconducting wire apparatus is a coil of wire wound on the end of a piece of board and connected in series with a battery and a flashlight bulb at the other end. The circuit is closed by screwing in the bulb and the bulb barely lights. If the end with the wire on it is dipped into liquid air, the bulb burns brightly.


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Setup Time25
Operation Time
Preview Time5
Operation Instructions
ExportableNo
Demo on DimeNo
PIRA 200Yes
Export Instructions (if different)
HazardsNone
Analysis/Information
Category4 Thermodynamics
Subcategory4A - Thermal Properties of Matter
Keywordslow temperature, semiconducting wire, thermistor, thermister
Construction Information
 
Equipment TitleUse SHIFT+ENTER to open the menu (new window).
  
QuantityUse SHIFT+ENTER to open the menu (new window).
  
liquid nitrogen
liquid nitrogen dewer
1
superconducting wire apparatus
1
thermistor apparatus
1
batteries C
2
batteries D
2