Two long and parallel straight wires A and B carrying currents of 8.0 A and 5.0 A in the same direction are separated by a distance of 4.0 cm. Estimate the force on a 10 cm section of wire A, in newtons?

expects 2 × 10⁻⁵ N

24 checks, 0 agreed

draft 24: failed while solving — RuntimeError: no equation determines the force on a wire on wire a from what is known

solution.rb · draft 24 failed while solving

1solve :two_parallel_wires, using: [MagneticFieldOfCurrents, MagneticForce] do2  objects :wire_a, :wire_b34  take current_a: wire_a.current5  take current_b: wire_b.current6  take separation: wire_a.distance_from_the_wire(by: wire_b)78  deduce_from "a 10 cm section of wire A", wire_a.length_in_the_field => "0.10 m"910  field = wire_b.field_near_a_wire11  force = wire_a.force_on_a_wire12  answer force:, in: "N", figures: 21314  conclusion "Wire B's current creates a magnetic field at wire A; that field pushes on wire A's current."15end

RuntimeError: no equation determines the force on a wire on wire a from what is known