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K5-35: RESISTORS AT LN TEMPERATURE 9 years 8 months ago #525

  • zzfixk21
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ID Code: K5-35
Purpose: Illustrate materials with both positive and negative temperature coefficients of resistivity.
Description: Approximately equal copper and carbon resistors are mounted on plastic mount which can be inserted into liquid nitrogen. When cooled from room temperature to the temperature of liquid nitrogen the resistance of the copper resistor decreases from 15.3 ohms to 2.0 ohms (first set of photos), while the resistance of the carbon resistor increases from 16.6 to 20.7 ohms (second set of photos).
Availability: Available

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