9. What is the reluctance of a material that has a length of 0.07 m, a cross-sectional area of 0.014 m2, and a permeability of 4,500 Wb/At × m?
A. 1 At/Wb
B. 11 At/Wb
C. 1111 At/Wb
D. 111 At/Wb
Engineering Magnetism and Electromagnetism Objective Questions