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Magnetism and Electromagnetism

Magnetism and Electromagnetism
Reciprocal of permeability is

conductance
Reluctivity
Permeability
Susceptibility

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Magnetism and Electromagnetism
What is the magnitude and the direction of force per 1.1m length of a pair of conductors of a direct current linecarrying 10 amperes and spaced 100 mm apart ?

22 x 10"7 N
22 x 10"8 N
22 x 10-6 N
22 x 10"5 N

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Magnetism and Electromagnetism
The use of permanent magnets is. not made in

Transformers
None of the listed here
Loud speakers
Energy meters

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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
When a magnet is in motion relative to a coil the induced e.m.f. does not depend upon

Motion of the magnet
Number of turns of the coil
Resistance of the coil
Pole strength of the magnet

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Magnetism and Electromagnetism
The stray line of magnetic flux is defined as

A line vertical to the flux lines
The mean length of a ring shaped coil
A line of magnetic flux in a non-uniform field
A line of magnetic flux which does not follow the designed path

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MORE MCQ ON Magnetism and Electromagnetism

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