Decrease of Resistance with Decrease in Temperature

Demo

A dewar of liquid nitrogen rests next to the light bulb apparatus.

Concept Overview:

1. As a material's temperature decreases, the resistance will also decrease.

Lecturer Procedure

Step(s) to Follow Expected Result

1. Turn on the switch.

2. Submerge bottom of light bulb in liquid nitrogen.

The bulb will get brighter and brighter as the apparatus cools.

 

Video: 
Transcript: 

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Identifier: 
E&M: C - 020