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Magnetism and Electromagnetism

Magnetism and Electromagnetism
The induced voltage across a stationary conductor in a stationary magnetic field is

increased
zero
decreased
reversed in polarity

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Magnetism and Electromagnetism
When the speed at which a conductor is moved through a magnetic field is increased, the induced voltage

decreases
reaches zero
remains constant
increases

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Magnetism and Electromagnetism
Magnetising steel is normals difficult because

it has high specific gravity
it has high permeability
it corrodes easily
it has low permeability

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Magnetism and Electromagnetism
Paramagnetic materials have relative permeability

equal to that ferromagnetic mate rials
slightly more than unity
slightly less than unity
equal to unity

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Magnetism and Electromagnetism
When two ends of a circular uniform wire are joined to the terminals of a battery, the field at the center of the circle

will depend on the radius of the circle
will be infinite
will be zero
will depend on the amount of e.m.f. applied

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Magnetism and Electromagnetism
When a solenoid is activated, the force that moves the plunger is

varying voltage
a steady current
an electromagnetic field
a permanent magnetic field

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MORE MCQ ON Magnetism and Electromagnetism

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