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Magnetism and Electromagnetism

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

24 N
0.24 N
240 N
2.4 N

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Magnetism and Electromagnetism
An electromagnetic field exists only when there is

an increasing current
current
decreasing current
voltage

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Magnetism and Electromagnetism
The Biotsavart's law is a general modification of

Lenz's law
Kirchhoff's law
Faraday's laws
Ampere's law

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Magnetism and Electromagnetism
Paramagnetic materials have relative permeability

slightly less than unity
equal to unity
slightly more than unity
equal to that ferromagnetic mate rials

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Magnetism and Electromagnetism
Which of the following is a vector quantity?

Relalative permeability
Magnetic potential
Magnetic field intensity
Flux density

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Magnetism and Electromagnetism
Temporary magnets are used in

Motors
Generators
All of the listed here
Loud speakers

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MORE MCQ ON Magnetism and Electromagnetism

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