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Magnetism and Electromagnetism

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

2.4 At
240 At
2,400 At
24 At

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

Aluminium
Tungsten
Copper
Nickel

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Magnetism and Electromagnetism
What will be the magnetic potential difference across the air gap of 2 cm length in magnetic field of 200 AT/m?

16 AT
8 AT
4 AT
10 AT

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Magnetism and Electromagnetism
If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density

doubles
remains the same
decreases
increases

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Magnetism and Electromagnetism
The force between two long parallel conductors is inversely proportional to

Product of current in two conductors
Current in one conductor
Radius of conductor
Distance between the conductors

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

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

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MORE MCQ ON Magnetism and Electromagnetism

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