Resistivity and Temperature: Wire Coil in LN2

Instructions / Notes:

• Connect the copper wire coil in series with a rechargeable battery.
• Measure the current flowing through the coil.
• Submerge the coil in liquid nitrogen.
• Measure the current flowing through the submerged coil.

Concept Conveyed:

• The decrease in temperature due to the liquid nitrogen will decrease the resistance of the coil. The current should increase when the coil is submerged.

Photo Shows the Demonstration Used by the University of Texas at Austin.

Last updated on March 23, 2023