Mathematical and Physical Journal
for High Schools
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Problem P. 4495. (December 2012)

P. 4495. The form consisting of rings touching each other is soldered from a 1-m long metal wire of resistance 80 \Omega. (See the figure.) What is the resistance measured across the endpoints AB of the diameter of the great ring?

(4 pont)

Deadline expired on January 10, 2013.

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

Megoldásvázlat. \(\displaystyle R_{AB}=5~\Omega.\)

Statistics:

113 students sent a solution.
4 points:72 students.
3 points:25 students.
2 points:7 students.
1 point:6 students.
0 point:2 students.
Unfair, not evaluated:1 solutions.

Problems in Physics of KöMaL, December 2012