College Physics 10th Edition by Raymond Serway,Chris Vuille

Exercise 42

Two long, parallel conductors separated by 10.0 cm carry currents in the same direction. The first wire carries a current I 1 = 5.00 A, and the second carries I 2 = 8.00 A. (a) What is the magnitude of the magnetic field created by I 1 at the location of I 2 (b) What is the force per unit length exerted by I 1 on I 2 (c) What is the magnitude of the magnetic field created by I 2 at the location of I 1 (d) What is the force per length exerted by I 2 on I 1