Mathematical and Physical Journal
for High Schools
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Problem P. 4081. (May 2008)

P. 4081. A neutral and a charged capacitor which have the same capacitance are connected in parallel.

a) To what fraction of the original energy does the total energy of the system decrease, after connecting the condensers?

b) What happens to the ``lost energy''?

c) What is the correct answer to the previous question if all the conductors are superconductors.

(5 pont)

Deadline expired on June 11, 2008.


Statistics:

42 students sent a solution.
5 points:Almási 270 Gábor András, Bartha Zsolt, Blázsik Zoltán, Filep Tibor, Fonyó Dávid, Gál Bálint, Hartstein Máté, Hlatky Dávid, Hohmann Balázs, Iván Dávid, Jakab Dávid, Kovács 235 Gábor, Kovács 888 Gábor, Kovács Benjámin, Krämer Zsolt, Lovas Lia Izabella, Maknics András, Marák Károly, Nagy 648 Donát, Pázmán Koppány, Rárósi Dávid, Szabó 895 Dávid, Szolnoki Lénárd, Szük Dániel, Tolnai Gábor, Tolner Ferenc, Tóth 222 Barnabás, Török 125 Csaba, Trényi Róbert.
4 points:Farkas Márton, Gulyás Máté, Nagy Loránd, Najbauer Eszter Éva, Pálovics Péter, Patartics Bálint, Tihanyi Benedek, Velicsányi Péter.
3 points:3 students.
2 points:1 student.
0 point:1 student.

Problems in Physics of KöMaL, May 2008