Mathematical and Physical Journal
for High Schools
Issued by the MATFUND Foundation

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Problem P. 4033. (January 2008)

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 pont)

Deadline expired on February 11, 2008.

Statistics:

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 solutionss.

Problems in Physics of KöMaL, January 2008

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 solutionss.