A Very Long Thin Wire Produces a Magnetic Field of

Multiple Choice

A very long thin wire produces a magnetic field of
At a distance of
From the wire.What is the magnitude of the current? (μ₀ = 4π × 10^-7 T ∙ m/A)

A) 1.0 mA
B) 2.0 mA
C) 4,000 mA
D) 3,100 mA