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Which of the following is not correct ab...

Which of the following is not correct about relative magnetic permeability `(mu_(r))`?

A

It is a dimensionsless pure ratio.

B

For vacuum medium its value is one .

C

For ferromagnetic materials `mu_(r) gt gt 1`

D

For paramagnetic materials `mu_(r) gt 1` .

Text Solution

Verified by Experts

The correct Answer is:
d
(d) Relative magnetic permeability
`mu_(r)=("magnetic permeability of material" (mu))/("Permeability of free space" (mu_(0))`
It is a dimensionless pure ratio and for paramagnetic materials `mu_(r) gt 1`.
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