Relative permeability is inversely proportional to _________.

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SSC JE Electrical 15 Nov 2022 Shift 2 Official Paper
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  1. absolute permeability in medium
  2. permeability of air
  3. absolute permeability in free space
  4. permeability of material

Answer (Detailed Solution Below)

Option 3 : absolute permeability in free space
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Permeability

In electromagnetism, permeability is the measure of magnetization that a material obtains in response to an applied magnetic field.

For measuring relative permeability, a vacuum is chosen as the reference medium.

Relative permeability is defined as the ratio of material permeability to the absolute permeability of free space (or vacuum).

Hence, Relative permeability is inversely proportional to absolute permeability in free space.

where, μ = Material permeability

μo = Absolut permeability of free space

μr = Relative permeability

The value of permeability of vacuum is 4π × 10-7 H/m.

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