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Magnetism and Electromagnetism

Magnetism and Electromagnetism
The main constituent of permalloy is

Tungsten
Chromium
Cobalt
Nickel

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Magnetism and Electromagnetism
A square cross-sectional magnet has a pole strength of 1 x 10 Wb and cross sectional area of 20 mm x 20 mm. What is the strength at a distance of 100 mm from the unit pole in air ?

6338 N/Wb
633.8 N/Wb
63.38 N/Wb
63380 N/Wb

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

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

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Magnetism and Electromagnetism
The materials are a bit inferior conductors of magnetic flux than air.

Dielectric
None of the listed here
Diamagnetic
Ferromagnetic

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Magnetism and Electromagnetism
One telsa is equal to

1 Wb/mm²
1 Wb/m
1 mWb/m²
1 Wb/m²

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Magnetism and Electromagnetism
Unit for quantity of electricity is

Ampere
Ampere-hour
Joule
Coulomb

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MORE MCQ ON Magnetism and Electromagnetism

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