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Magnetism and Electromagnetism

Magnetism and Electromagnetism
For which of the following materials the saturation value is the highest?

Diamagnetic materials
Ferromagnetic materials
Paramagnetic materials
Ferrites

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Magnetism and Electromagnetism
Fleming's left hand rule is used to find

Direction of magnetic field due to current carrying conductor
Direction of force on a current carrying conductor in a magnetic field
Polarity of a magnetic pole
Direction of flux in a solenoid

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Magnetism and Electromagnetism
What is the magneto-motive force in a 75-turn coil of wire when there are 4 A of current through it?

100 At
300 At
150 At
200 At

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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

None of the listed here
Decrease
Increase
Is zero

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

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

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

Non-magnetic substances
Electromagnets
Transformers
Permanent magnets

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MORE MCQ ON Magnetism and Electromagnetism

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