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A short bar magnet placed with its axis ...

A short bar magnet placed with its axis at` 30^(@)` with an external field of 800 G experiences a torque of 0.016 Nm.
(a)What is the magnetic moment of the magnet ?

Text Solution

Verified by Experts

`M_s=NIA`. From part (a) . `m_s=0.40Am^2`
`0.40 = 1000 xx I xx 2 xx 10^(-4)`
`I=0.40 xx 10^(4) // (1000 xx 2)=2A`
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VMC MODULES ENGLISH-MOVING CHARGES & MAGNETISM -Illustration
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