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Magnetism and Electromagnetism

Magnetism and Electromagnetism
Gilbert is a unit of

electromotive force
permittivity
conductance
magnetomotive force

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

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

3 AT
30 AT
0.3 AT
300 AT

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Magnetism and Electromagnetism
An electromagnetic field exists only when there is

voltage
decreasing current
current
an increasing current

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Magnetism and Electromagnetism
The direction of magnetic lines of force is

From south pole to north pole
From one end of the magnet to another
None of the listed here
From north pole to south pole

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Magnetism and Electromagnetism
Two long parallel conductors carry 100 A. If the conductors are separated by 20 mm, the force per meter of length of each conductor will be

0.01 N
100 N
0.1 N
10 N

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MORE MCQ ON Magnetism and Electromagnetism

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