Heating In Current-Carrying Wire

Purpose

To show the conversion of electrical energy into heat.
 

Equipment

Sagging wire apparatus.

 

Images

k6-21

Description

Push to attach 110 VAC to wire, heating the wire and causing it to become longer and sag. The marker◙hanging in the center of the wire indicates the sag.
 

References

Richard C. Hitchcock, Mark W. Zemansky, Demonstrating Linear Thermal Expansion By Using the Catenary, AJP 13, 329-333, (1945).