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Magnetism and Electromagnetism

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

Bipolar
Paramagnetic material
Ferro magnetic material
Diamagnetic material

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Magnetism and Electromagnetism
The Biotsavart's law is a general modification of

Lenz's law
Kirchhoff's law
Ampere's law
Faraday's laws

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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

Decrease
Remain Constant
Increase
Be excessive

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Magnetism and Electromagnetism
Core of an electromagnet should have

None of the listed here
Low coercivity
High susceptibility
Both low coercivity and high susceptibility

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Magnetism and Electromagnetism
The initial permeability of an iron rod is

The permeability at the end of the iron rod
The lowest permeability of the iron rod
The highest permeability of the iron rod
The permeability almost in non-magnetised state

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Magnetism and Electromagnetism
When the north poles of two bar magnets are brought close together, there will be

no force
a force of attraction
a force of repulsion
a downward force

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MORE MCQ ON Magnetism and Electromagnetism

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