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Magnetism and Electromagnetism

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

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

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

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Magnetism and Electromagnetism
What is the magneto-motive force (mmf) of a wire with 8 turns carrying three amperes of current?

240 At
2.4 At
24 At
2,400 At

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

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

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Magnetism and Electromagnetism
Temporary magnets are used in

Motors
Generators
Loud speakers
All of the listed here

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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?

3 AT
0.3 AT
30 AT
300 AT

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MORE MCQ ON Magnetism and Electromagnetism

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