Two Parallel Conductors Each of 0

Multiple Choice

Two parallel conductors each of 0.67 m length,separated by 4.1 × 10−³ m and carrying 3.2 A in opposite directions,will experience what type and magnitude of mutual force? (magnetic permeability in empty space µ₀ = 4π × 10−⁷ T⋅m/A)

A) attractive,7.5 × 10−⁴ N
B) repulsive,7.5 × 10−⁴ N
C) attractive,3.3 × 10−⁴ N
D) repulsive,3.3 × 10−⁴ N
E) ​zero