Question

What we call the conductivity of a magnetic substance for the lines of force with respect to air?
A . Magnetic induction
B . Magnetic permeability
C . Magnetic flux density
D . Intensity of magnetization

Answer 1

Hint:Magnetic Permeability is that the measure of the power of a cloth to support the formation of a magnetic flux within itself. In other words, it's the degree of magnetization that a cloth obtains in response to an applied Magnetic flux.

Complete step by step solution:
In electromagnetism, permeability is the measure of the resistance of a cloth against the formation of a magnetic flux, otherwise referred to as distributed inductance in cable theory. Hence, it's the degree of magnetization that a cloth obtains in response to an applied Magnetic flux. Permeability is usually represented by the (italicized) Greek letter μ. The reciprocal of permeability is magnetic reluctivity.

In SI units, permeability is measured in henry per meter (H/m), or equivalently in newtons per ampere squared (N⋅A−2). The permeability constant μ0, also referred to as the magnetic constant or the permeability of free space, may be a measure of the quantity of resistance encountered when forming a magnetic flux during a classical vacuum. Until 20 May 2019, the magnetic constant had the precise value μ0 = 4π × 10−7 H/m ≈ 12.57×10−7 H/m.

A closely related property of materials is magnetic susceptibility, which may be a dimensionless proportionality factor that indicates the degree of magnetization of a cloth in response to an applied Magnetic flux.

Note:Magnetic permeability also mentioned as just permeability in electromagnetism may be a property of a magnetic material which supports the formation of a magnetic flux. The term was coined by Heaviside within the year 1885. Magnetic permeability may be a property that basically allows magnetic lines of force to undergo a change. In other words, the magnetic permeability of a material also can be said to be its magnetization capability. This helps in determining what proportion of magnetic flux can support the material.