Mathematical and Physical Journal
for High Schools
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Problem P. 3969. (March 2007)

P. 3969. Electric currents of magnitude I flow in two loops made of insulated wires, their direction is shown in the figure. The shapes of the loops are regular n-gons. In which case will the magnetic field be greater at the centre of circle that is circumscribed around the n-gon?

(5 pont)

Deadline expired on April 11, 2007.


37 students sent a solution.
5 points:Almási 270 Gábor András, Blastik Zsófia, Blázsik Zoltán, Dudás János, Egyed Lenke, Hlatky Dávid, Lovas Lia Izabella, Nagy 224 Csaba, Pálovics Róbert, Szilágyi Zsombor, Szolnoki Lénárd, Tolner Ferenc, Tüzes Dániel, Varga Bonbien.
4 points:Almasi Susann Melinda, Sándor Bulcsú, Sümegi Károly.
3 points:3 students.
2 points:2 students.
1 point:2 students.
0 point:6 students.
Unfair, not evaluated:7 solutionss.

Problems in Physics of KöMaL, March 2007