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Magnetism and Electromagnetism

Magnetism and Electromagnetism
One telsa is equal to

1 Wb/m²
1 mWb/m²
1 Wb/mm²
1 Wb/m

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Magnetism and Electromagnetism
For a given wirewound core, an increase in current through the coil

decreases the flux density
causes no change in flux density
increases the flux density
reverses the flux lines

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Magnetism and Electromagnetism
What is the magneto-motive force in a 75-turn coil of wire when there are 4 A of current through it?

150 At
200 At
100 At
300 At

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Magnetism and Electromagnetism
Which of the following is expected to have the maximum permeability ?

Ebolite
Zinc
Brass
Copper

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

Ferromagnetic material
Ferrits
Paramagnetic material
Diamagnetic material

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Magnetism and Electromagnetism
Ferrites are materials.

None of the listed here
Diamagnetic
Ferromagnetic
Paramagnetic

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MORE MCQ ON Magnetism and Electromagnetism

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