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Magnetism and Electromagnetism

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

Diamagnetic
Ferromagnetic
Dielectric
None of the listed here

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Magnetism and Electromagnetism
An electromagnetic field exists only when there is

decreasing current
current
voltage
an increasing current

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Magnetism and Electromagnetism
When the speed at which a conductor is moved through a magnetic field is increased, the induced voltage

decreases
reaches zero
remains constant
increases

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Magnetism and Electromagnetism
Materials subjected to rapid reversal of magnetism should have

High permeability and low hysteresis loss
Large area of B-H loop
High co-ercivity and low density
High co-ercivity and high retentivity

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

None of the listed here
Permanent magnet
Temporary Magnet
Weak magnet

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Magnetism and Electromagnetism
The susceptibility of paramagnetic materials generally lies between

KT3 and 1CT6
KT4 and KT8
1CT3 and 1CT7
10"2 and KT5

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MORE MCQ ON Magnetism and Electromagnetism

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