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Magnetism and Electromagnetism

Magnetism and Electromagnetism
When a solenoid is activated, the force that moves the plunger is

a permanent magnetic field
an electromagnetic field
varying voltage
a steady current

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Magnetism and Electromagnetism
A material which is slightly repelled by a magnetic field is known as

ferromagnetic material
diamagnetic material
paramagnetic material
conducting material

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Magnetism and Electromagnetism
The direction of magnetic lines of force is

None of the listed here
From north pole to south pole
From one end of the magnet to another
From south pole to north pole

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Magnetism and Electromagnetism
If the steel disk in a crankshaft position sensor has stopped with the tab in the magnet's air gap, the induced voltage

Decrease
Increase
Is zero
None of the listed here

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Magnetism and Electromagnetism
The use of permanent magnets is. not made in

Transformers
Energy meters
None of the listed here
Loud speakers

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Magnetism and Electromagnetism
A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be

M/2
M/4
2M
M

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MORE MCQ ON Magnetism and Electromagnetism

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