A long horizontal wire carries a current of It = 49.4 A. A seond wire (I), made of 2.30mm diameter copper wire and parallel to the first but L=17.6cm below it, is held in suspension magnetically. What is the current in the lower wire? use right as positive direction.© BrainMass Inc. brainmass.com June 3, 2020, 5:05 pm ad1c9bdddf
Force per unit length between the two wires due to magnetic field of current= (Mu 0 i1 i2 / 2 pi d)
where i1 , i2 are the currents
d is the distance between the wires
This force will support the weight of the ...
The expert calculates the current in the lower wire.