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Magnetism and Electromagnetism

Magnetism and Electromagnetism
The susceptibility of paramagnetic materials generally lies between

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

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Magnetism and Electromagnetism
For a given wire-wound core, an increase in current through the coil

Increases the flux density
Reverses the flux lines
Causes no change in flux density
Decreases the flux density

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Magnetism and Electromagnetism
The stray line of magnetic flux is defined as

A line of magnetic flux which does not follow the designed path
A line of magnetic flux in a non-uniform field
The mean length of a ring shaped coil
A line vertical to the flux lines

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Magnetism and Electromagnetism
Which of the following is a ferromagnetic material?

Nickel
Copper
Aluminium
Tungsten

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Magnetism and Electromagnetism
Which of the following is expected to have the maximum permeability ?

Ebolite
Zinc
Brass
Copper

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Magnetism and Electromagnetism
How does the magnetic compass needle behave in a magnetic field?

None of the listed here
It assures a position which follows a line of magnetic flux
It starts rotating
It assures a position right angle to magnetic field

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