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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

susceptance
permeance
reluctance
residual magnetism

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Magnetism and Electromagnetism
A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be

M/2
M
2M
M/4

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Magnetism and Electromagnetism
The materials are a bit inferior conductors of magnetic flux than air.

None of the listed here
Diamagnetic
Dielectric
Ferromagnetic

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

Paramagnetic materials
Ferrites
Ferromagnetic materials
Diamagnetic materials

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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

2.4 N
24 N
0.24 N
240 N

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Magnetism and Electromagnetism
In the left hand rule, forefinger always represents

direction of force on the conductor
magnetic field
current
Voltage

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MORE MCQ ON Magnetism and Electromagnetism

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