two third of an iron rod is 1.1/4 m long. find the length of the whole rod?
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Answered by
5
Answer:
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Step-by-step explanation:
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Answered by
2
Answer:
25A/m²
Step-by-step explanation:
We know that, B=μ
0H+μ0
I
∴I=
μ
0
B−μ
0
H
=
μ
0
μ
0
H−μ
0
H
=(
μ
0
μ
0
−1)H
I=(μ
r
−1)H
For a solenoid having n turns/ length and current i,
H=ni
I=(μ
r
−1)ni
=(1000−1)500×0.5
=2.5×10
5
Am
−1
∴ Magnetic moment, M=IV
=2.5×20
5
=10
−4
=25 Am
2
.
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