The $ S.I.$ unit of magnetic permeability is
The $ S.I.$ unit of magnetic permeability is
- A
$A{m^{ - 1}}$
- B
$Am$
- C
$Henry\,{m^{ - 1}}$
- D
No unit, it is a dimensionless number
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- [IIT 2002]
Two identical dipoles each of magnetic moment $1.0\, A-m^2$ are placed at a separation of $2\,m$ with their axes perpendicular to each other. What is the magnetic field at a point midway between the dipoles ?
Two identical dipoles each of magnetic moment $1.0\, A-m^2$ are placed at a separation of $2\,m$ with their axes perpendicular to each other. What is the magnetic field at a point midway between the dipoles ?