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Physics
Core of electromagnets are made of ferromagnetic materials which have
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Q. Core of electromagnets are made of ferromagnetic materials which have
KCET
KCET 2015
Magnetism and Matter
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.