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A permanent magnet in the shape of a thi...

A permanent magnet in the shape of a thin cylinder of length 10 cm has magnetization `(M) = 10^(6)Am^(-1)`. Its magnetization current `I_(m)` is

A

`10^(5)A`

B

`10^(6)A`

C

`10^(7)A`

D

`10^(8)A`

Text Solution

Verified by Experts

The correct Answer is:
A
`"As", Bl=mu_(0)Ml=mu_(0)(I+I_(M))`
`"Here", I=0`
`"Then", mu Ml=mu_(0)(I_(M))`
`Rightarrow I_(M)=Ml=10^(6)xx0.1=10^(5)A`
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