is
A sample of cast iron exhibits a magnetic field of 0.8 T,
when intensity of magnetising field (H) is 20 A/m.
Magnetic permeability of the given sample of iron (in
SI unit) is
5
(n
2
CE
0.05
1
0.08
(o
0.04
(b
0.06
Answers
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1
Answer:
(i) μ=BHμ=BH
= 0.5100.510
=5100=5100
=1200=1200
=120=120
=0.05TmA=0.05TmA
(ii) B0=μ0HB0=μ0H
=4π×10−7×10Am=4π×10-7×10Am
=4π×10−6T
Explanation:
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