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Magnetism and Electromagnetism

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
300 AT
0.3 AT
30 AT

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Magnetism and Electromagnetism
Which of the following is expected to have the maximum permeability ?

Ebolite
Copper
Brass
Zinc

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Magnetism and Electromagnetism
The main constituent of permalloy is

Cobalt
Nickel
Tungsten
Chromium

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Magnetism and Electromagnetism
The uniform magnetic field is

The field of a set of parallel conductors
The field in which all lines of magnetic flux are parallel and equidistant
None of the listed here
The field of a single conductor

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Magnetism and Electromagnetism
The magnetic materials exhibit the property of magnetisation because of

either of these
spin of electrons
spin of nucleus
orbital motion of electrons

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

300 At
187 At
18.75 At
30 At

ANSWER DOWNLOAD EXAMIANS APP
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