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Magnetism and Electromagnetism

Magnetism and Electromagnetism
Which of the following is not a unit of flux?

Tesla
Weber
All of the listed here
Maxwell

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Magnetism and Electromagnetism
A keeper is used to

Change the direction of magnetic lines
Provide a closed path for flux
Restore lost flux
Amplify flux

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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?

30 AT
0.3 AT
300 AT
3 AT

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Magnetism and Electromagnetism
An electromagnetic field exists only when there is

an increasing current
decreasing current
voltage
current

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Magnetism and Electromagnetism
For which of the following materials the net magnetic moment should be zero?

diamagnetic materials
antiferromagnetic materials
ferrimagnetic materials
antiferrimagnetic materials

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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?

200 At
150 At
100 At
300 At

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MORE MCQ ON Magnetism and Electromagnetism

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