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Tardigrade
Question
Physics
Core of electromagnets are made of ferromagnetic materials which have
Q. Core of electromagnets are made of ferromagnetic materials which have
2562
235
KCET
KCET 2015
Magnetism and Matter
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A
low permeability and low retentivity
9%
B
high permeability and high retentivity
32%
C
high permeability and low retentivity
49%
D
low permeability and high retentivity
11%
Solution:
Core of electromagnets are made of soft iron that is a ferromagnetic material with high permeability and low retentivity.