Mathematical and Physical Journal
for High Schools
Issued by the MATFUND Foundation
Already signed up?
New to KöMaL?
I want the old design back!!! :-)

Problem P. 4472. (October 2012)

P. 4472. There are two coils wined around the same closed iron core. Their inductances on this iron core are measured to be 4 henry, and 9 henry. Then the two coils are connected in series. What will the equivalent inductance be?

(5 pont)

Deadline expired on November 12, 2012.

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

Megoldásvázlat. A kapcsolás módjától függően 25 henry, vagy 1 henry.


32 students sent a solution.
5 points:Bingler Arnold, Csathó Botond, Csordás Gábor, Filep Gábor, Garai Zoltán, Horicsányi Attila, Juhász Péter, Olosz Balázs, Papp Roland, Sisák Mária Anna, Szabó 928 Attila, Trócsányi Péter, Vajda Balázs.
3 points:8 students.
2 points:3 students.
1 point:4 students.
0 point:4 students.

Problems in Physics of KöMaL, October 2012