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Magnetism and Electromagnetism

Magnetism and Electromagnetism
A magnetic field exists around

Aluminium
Iron
Copper
Moving Charges

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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
remains constant
reaches zero
increases

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Magnetism and Electromagnetism
Magnetising steel is normals difficult because

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

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

0.24 AT
2.4 AT
240 AT
24 AT

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Magnetism and Electromagnetism
The direction of a magnetic field within a magnet is

front to back
back to front
from north to south
from south to north

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Magnetism and Electromagnetism
Which of the following is a ferromagnetic material?

Aluminium
Nickel
Copper
Tungsten

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MORE MCQ ON Magnetism and Electromagnetism

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