Part of eval main bdd945f six, agent version bdd945f
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
draft 24: failed in solution.rb, line 10 — ArgumentError: two_parallel_wires gives nothing called field_at_a
1solve :two_parallel_wires, using: [MagneticFieldOfCurrents, MagneticForce] do2 objects :a, :b34 take current_a: a.current5 take current_b: b.current6 take separation: a.distance_from_the_wire(from: b)78 deduce_from "a 10 cm section of wire A", a.length_in_the_field => "10 cm"910 take field_at_a: b.field_near_a_wireArgumentError: two_parallel_wires gives nothing called field_at_a1112 force = a.force_on_a_wire1314 answer force:, in: "N", figures: 21516 conclusion "Wire B creates a magnetic field at wire A; the force on a section of wire A is that field times the current and length."17end