What is the relation between magnetic flux density (B) and magnetic field strength (H)?

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SSC JE EE Previous Paper 10 (Held on: 10 Dec 2020)
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  1. B = μH
  2. H = B / l
  3. B = H / l
  4. H = μB 

Answer (Detailed Solution Below)

Option 1 : B = μH
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Magnetic field strength or field intensity (H) is the amount of magnetising force.

Magnetic flux density (B) is the amount of magnetic force induced on the given body due to the magnetising force H.

The relation between B and H is,

B = μH

Where, μ is the relative permeability

Permeability is the measure of the ability of a material to support the formation of a magnetic field within itself. It is the degree of magnetization that a material obtains in response to an applied magnetic field.

It is a constant of proportionality that exists between magnetic flux density and magnetic field intensity.

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