Problem P. 3809. (May 2005)
P. 3809. Two identical solenoids are closely packed with a common axle. The cross section of the coils is A and there are n turns of the coil in the unit length. What is the force between them if we have
a) current I in both of them?
b) current I1 in one and I2 in the other?
Deadline expired on June 13, 2005.
11 students sent a solution. 5 points: Gyenis András, Meszéna Balázs, Pálinkás Csaba. 4 points: Hagymási Imre, Nagy 555 Zoltán, Széchenyi Gábor. 3 points: 2 students. 2 points: 1 student. 1 point: 2 students.