Problem P. 4327. (March 2011)
P. 4327. One of the trains of the M2 metro line in Budapest consists of 5 cars. When the train starts, each car uses 300 A current from the 800 V voltage supply. How much does it cost to accelerate this train for 10 seconds, if the price of 1 kWh is 18 euro cents?
(3 pont)
Deadline expired on April 11, 2011.
Sorry, the solution is available only in Hungarian. Google translation
Megoldás. Kb. 160 Ft.
Statistics:
152 students sent a solution. 3 points: 136 students. 2 points: 9 students. 1 point: 3 students. 0 point: 1 student. Unfair, not evaluated: 3 solutionss.
Problems in Physics of KöMaL, March 2011