The $ S.I.$ unit of magnetic permeability is
$A{m^{ - 1}}$
$Am$
$Henry\,{m^{ - 1}}$
No unit, it is a dimensionless number
(c)
The current is flowing through solenoid, then solenoid acting as what ?
Write the equation of magnetic field on the axis of current carrying finite solenoid.
Assertion : The poles of magnet can not be separated by breaking into two pieces.
Reason : The magnetic moment will be reduced to half when a magnet is broken into two equal pieces.
A charged particle (charge $q$) is moving in a circle of radius $R$ with uniform speed $v.$ The associated magnetic moment $\mu $ is given by
Magnetic lines of force due to a bar magnet do not intersect because
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