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Magnetism and Electromagnetism

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

Flux density
Magnetic field intensity
Relalative permeability
Magnetic potential

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Magnetism and Electromagnetism
Two long parallel conductors carry 100 A. If the conductors are separated by 20 mm, the force per meter of length of each conductor will be

0.01 N
0.1 N
10 N
100 N

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Magnetism and Electromagnetism
The attraction capacity of electromagnet will increase if the

Flux density decreases
Core area increases
Flux density increases
Core length increases

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Magnetism and Electromagnetism
The magnetic materials exhibit the property of magnetisation because of

spin of electrons
spin of nucleus
orbital motion of electrons
either of these

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Magnetism and Electromagnetism
The unit of flux is the same as that of

Permanance
Resistance
Pole strength
Reluctance

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Magnetism and Electromagnetism
When the current through the coil of an electromagnet reverses, the

magnetic field expands
direction of the magnetic field reverses
direction of the magnetic field remains unchanged
magnetic field collapses

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MORE MCQ ON Magnetism and Electromagnetism

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