KöMaL - Mathematical and Physical Journal for Secondary Schools
Hungarian version Information Contest Journal Articles News
Entry form to the contest
Problems and solutions
Results of the competition
Problems of the previous years



Order KöMaL!

Competitions Portal

P. 4033. Three cells are connected in series. Their electromotive forces are 2 V, 10 V, and 5 V; their internal resistances are 0.2 \Omega, 0.3 \Omega, and 0.5 \Omega. Calculate the voltage across the third cell and graph this terminal voltage as a function of the external resistance connected to the circuit.

(4 points)

Deadline expired on 11 February 2008.

Statistics on problem P. 4033.
87 students sent a solution.
4 points:54 students.
3 points:18 students.
2 points:10 students.
0 point:2 students.
Unfair, not evaluated:3 solutions.

  • Problems in Physics of KöMaL, January 2008

  • Our web pages are supported by:   Ericsson   Google   Cognex   Emberi ErőforrĂĄs TĂĄmogatĂĄskezelő   Emberi ErőforrĂĄsok MinisztĂŠriuma  
    OktatĂĄskutatĂł ĂŠs Fejlesztő IntĂŠzet   Nemzeti TehetsĂŠg Program     Nemzeti
KulturĂĄlis Alap   ELTE   Morgan Stanley