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Magnetism and Electromagnetism

Magnetism and Electromagnetism
The magnetism left in the iron after exciting field has been removed is known as

residual magnetism
reluctance
permeance
susceptance

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Magnetism and Electromagnetism
The uniform magnetic field is

None of the listed here
The field of a single conductor
The field of a set of parallel conductors
The field in which all lines of magnetic flux are parallel and equidistant

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Magnetism and Electromagnetism
The change of cross-sectional area of conductor in magnetic field will affect

resistance of conductor
both of the listed here
None of these
reluctance of conductor

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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
Decreases
Remain same

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Magnetism and Electromagnetism
The main constituent of permalloy is

Cobalt
Tungsten
Chromium
Nickel

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Magnetism and Electromagnetism
Strength of an electromagnet can be increased by

Increasing current supply
Increasing the cross-sectional area
All of the listed here
Increasing the number of turns

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MORE MCQ ON Magnetism and Electromagnetism

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