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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?

240 At
2.4 At
24 At
2,400 At

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Magnetism and Electromagnetism
What is the flux density when the flux is 5.5 Wb and the cross-sectional area is 6 × 10–3 m2?

91.7 T
917 T
9.7 T
91 T

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

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

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Magnetism and Electromagnetism
The direction of a magnetic field within a magnet is

from north to south
front to back
back to front
from south to north

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

Ferrites
Ferromagnetic materials
Paramagnetic materials
Diamagnetic materials

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Magnetism and Electromagnetism
Unit for quantity of electricity is

Joule
Ampere
Ampere-hour
Coulomb

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MORE MCQ ON Magnetism and Electromagnetism

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