What is the magnetic field at the center of a single(N = 1 turn) circular loop of wire or radius 10 cm carrying a current of 2.5 A?
a. 5.0 x 10⁻⁶ T
b. 3.14 x 10⁻⁵ T
c. 2.41 x 10⁻⁴ T
d. 1.57 x 10⁻⁷ T