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《Physics Experimentation》 2015-01
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Self-made color-change slide rheostat

ZHANG Hong-ming;XIE Xin-yu;Minggang Middle School;High School Attached to Northeast Normal University;  
A self-made color-change slide rheostat was made.When current flowed through the slide rheostat that coated with temperature-sensitive ink,the ink color would change due to the thermal effects of the current.This color-change phenomenon could visually show the current flowed in the rheostat.
【CateGory Index】: G633.7
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