Case : Read the passage and answer the question(s).
The magnetic susceptibility of a substance is defined as the measure of how readily it responds to an external magnetic field. It gives the measure of a substance's aptness to acquire magnetism. It has no units. Mathematically, it is defined as the ratio of the intensity of magnetization to the magnetic intensity. The susceptibility of a substance is given as (2.7 x 10-5).
What is the magnetic permeability of the substance?
Answer & explanation
Correct answer: option 3
μ = μo μr = μo (1 + X)
X = 2.7 x 10-5
μο = 4π x 10-7
μ = 12.5 x 10-7