K6-21. Heating In Current-Carrying Wire

Purpose

To show the conversion of electrical energy into heat.

Equipment

Sagging wire apparatus.

Images

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).