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Magnetism and Electromagnetism

Magnetism and Electromagnetism
The magnetism left in the iron after exciting field has been removed is known as

permeance
reluctance
susceptance
residual magnetism

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Magnetism and Electromagnetism
For which of the following materials the saturation value is the highest?

Ferromagnetic materials
Paramagnetic materials
Diamagnetic materials
Ferrites

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Magnetism and Electromagnetism
Which of the following is the unit of magnetic flux density?

Weber
None of the listed here
Tesla
Lumens

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Magnetism and Electromagnetism
What will be the magnetic potential difference across the air gap of 2 cm length in magnetic field of 200 AT/m?

8 AT
4 AT
10 AT
16 AT

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Magnetism and Electromagnetism
A 300 mm long conductor is carrying a current of 10 A and is situated at right angles to a magnetic field having a flux density of 0.8 T ; the force on the conductor will be

0.24 N
2.4 N
24 N
240 N

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Magnetism and Electromagnetism
The magnetic materials exhibit the property of magnetisation because of

spin of nucleus
either of these
orbital motion of electrons
spin of electrons

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MORE MCQ ON Magnetism and Electromagnetism

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