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What is the relative permeability of a...

What is the relative permeability of air ?

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An iron-cored solenoid has self- inductance. 2.8 H. When the core is removed, the self inductance becomes 2 mH. What is the relative permeability of the core used?

The core of a toroid having 3000 turns has inner and outer radii of 16 cm and 17 cm respectively . The magnetic field in the core for a current of 0.07 A is 2.5 T . What is relative permeability of the core ?

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The magnetic field B and the magnetic intensity H in a material are found to be 1.6 T and 1000 A m^(-1) respectively. Calculate the relative permeability mu , and the susceptibiliyt chi of the material.

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