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Magnetism and Electromagnetism

Magnetism and Electromagnetism
Ferrites are materials.

Ferromagnetic
None of the listed here
Diamagnetic
Paramagnetic

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Magnetism and Electromagnetism
If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density

decreases
remains the same
increases
doubles

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Magnetism and Electromagnetism
Susceptibility is positive for

ferromagnetic substances
None of these
non-magnetic substances
diamagnetic substances

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Magnetism and Electromagnetism
Magnetic moment is a

scalar quantity
universal constant
vector quantity
pole strength

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Magnetism and Electromagnetism
The force between two long parallel conductors is inversely proportional to

Radius of conductor
Product of current in two conductors
Current in one conductor
Distance between the conductors

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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?

0.3 AT
30 AT
300 AT
3 AT

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