Mathematical and Physical Journal
for High Schools
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Problem M. 264. (November 2005)

M. 264. Let us unplug a tungsten filament bedside lamp, which was on for a long time and measure the resistance of the cooling filament as a function of the elapsed time. How long does it take the resistance to decrease to half of the value of the resistance of the filament at the operating temperature.

(6 pont)

Deadline expired on December 12, 2005.


15 students sent a solution.
6 points:Kocsis Vilmos, Meszéna Balázs.
5 points:Illés Máté, Kőrösi Márton, Láng Marcell, Mirk Katinka, Tüzes Dániel.
4 points:3 students.
2 points:2 students.
1 point:2 students.
0 point:1 student.

Problems in Physics of KöMaL, November 2005