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Magnetism and Electromagnetism

Magnetism and Electromagnetism
The materials having low retentivity are suitable for making

Permanent magnet
None of the listed here
Weak magnet
Temporary Magnet

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Magnetism and Electromagnetism
The Biotsavart's law is a general modification of

Kirchhoff's law
Lenz's law
Ampere's law
Faraday's laws

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Magnetism and Electromagnetism
What is the reluctance of a material that has a length of 0.07 m, a cross-sectional area of 0.014 m2, and a permeability of 4,500 Wb/At × m?

111 At/Wb
1 At/Wb
1111 At/Wb
11 At/Wb

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Magnetism and Electromagnetism
The relative permeability is less than unity is case of

Diamagnetic material
Paramagnetic material
Ferrits
Ferromagnetic material

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Magnetism and Electromagnetism
The commonly used material for shielding or screening magnetism is

Brass
Copper
Aluminium
Soft iron

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Magnetism and Electromagnetism
Which of the following is a ferromagnetic material?

Aluminium
Copper
Nickel
Tungsten

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MORE MCQ ON Magnetism and Electromagnetism

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