Mathematical and Physical Journal
for High Schools
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Problem P. 4466. (October 2012)

P. 4466. The trolley pole of electric train engines - big current flows through them - often sparks. The same current flows through the wheels into the rails as well. Why doesn't the wheels spark?

(3 pont)

Deadline expired on November 12, 2012.


Sorry, the solution is available only in Hungarian. Google translation

Megoldásvázlat. A mozdony több keréken, nagyobb felületen érintkezik a sínekkel. A kerekek nem távolodnak el a sínektől, így ívkisülés (szikra) sem alakulhat ki.


Statistics:

169 students sent a solution.
3 points:103 students.
2 points:31 students.
1 point:16 students.
0 point:15 students.
Unfair, not evaluated:4 solutions.

Problems in Physics of KöMaL, October 2012