Conference Session

Materials Division Technical Session 2

Collection

2015 ASEE Annual Conference & Exposition

Authors

Kathleen Meehan, University of Glasgow; Robert H. Hadfield, University of Glasgow; Andrew Phillips

Tagged Divisions

Materials

. However, there was a lengthy warm-up time as the drive current to thepower resistor was restricted to a maximum of 0.8 A, the maximum current that the 12V AC-to-DC adaptor used as the power supply for the apparatus could drive through the 15  power resistor.The circuit had to be turned on for approximately 20 minutes before the apparatus was ready foruse by the students. As students would perform the measurements needed to calculate electricalresistance prior to the measurements needed for the calculations of thermal conductivity andspecific heat capacity, the warm-up time was acceptable as long as the apparatus was turned on atthe beginning of the lab session.A power switch was integrated into the circuit along with two LED indicators, a yellow