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Magnetism and Electromagnetism

Magnetism and Electromagnetism
Substances which have permeability less than the permeability of free space are known as

Ferro magnetic material
Bipolar
Diamagnetic material
Paramagnetic material

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Magnetism and Electromagnetism
The two conductors of a transmission line carry equal current I in opposite directions. The force on each conductor is

proportional to 7
proportional to distance between the conductors
proportional to X
inversely proportional to I

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Magnetism and Electromagnetism
A coil of wire is placed in a changing magnetic field. If the number of turns in the coil is decreased, the voltage induced across the coil will

None of the listed here
Increases
Remain same
Decreases

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

2,400 At
240 At
2.4 At
24 At

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

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

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Magnetism and Electromagnetism
Unit for quantity of electricity is

Joule
Coulomb
Ampere
Ampere-hour

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MORE MCQ ON Magnetism and Electromagnetism

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