Mathematical and Physical Journal
for High Schools
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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 solutions.

Problems in Physics of KöMaL, January 2008