Field of a Circular Loop: a Circular Loop of Wire

Multiple Choice

Field of a circular loop: A circular loop of wire of radius 10 cm carries a current of 6.0 A. What is the magnitude of the magnetic field at the center of the loop? (μ₀ = 4π × 10^-7 T ∙ m/A)

A) 3.8 × 10^-5 T
B) 3.8 × 10^-7 T
C) 1.2 × 10^-5 T
D) 1.2 × 10^-7 T
E) 3.8 × 10^-8 T