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 I_{1} in one and I_{2} in the other?
(5 pont)
Deadline expired on 13 June 2005.
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