Two Parallel Wires Are Separated by 0

Multiple Choice

Two parallel wires are separated by 0.25 m.Wire A carries 4.1 A and Wire B carries 10 A,both currents in the same direction.The magnetic permeability in empty space µ₀ = 4π × 10−⁷ T⋅m/A.The magnitude of the force on 1.4 m of Wire A is:

A) 2.6 × 10^-5 N.
B) 4.6 × 10^-5 N.
C) less than 1.0 × 10^-5 N.
D) 3.2 × 10^-5 N.