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Magnetism and Electromagnetism

Magnetism and Electromagnetism
Temporary magnets are used in

Motors
Generators
All of the listed here
Loud speakers

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Magnetism and Electromagnetism
One telsa is equal to

1 mWb/m²
1 Wb/m
1 Wb/mm²
1 Wb/m²

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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

increases
doubles
remains the same
decreases

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Magnetism and Electromagnetism
What is the flux density in a magnetic field in which the flux in 0.1 m2 is 600 Wb?

600 T
600 T
6 T
6,000 T

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Magnetism and Electromagnetism
The ratio of intensity of magnetisation to the magnetisation force is known as

Susceptibility
None of the listed here
Relatice permeability
Flux density

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Magnetism and Electromagnetism
The retentivity of material is useful for the construction of

Permanent magnets
Transformers
Electromagnets
Non-magnetic substances

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MORE MCQ ON Magnetism and Electromagnetism

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