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CBSE Class 12-science Answered

Plz answer 6th numerical 
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Asked by lovemaan5500 | 03 Oct, 2019, 05:49: AM
answered-by-expert Expert Answer
Magnetisation M = χ H  .............(1)
 
where χ  is magnetic susceptibility.  χ is related to relative magnetic permeability μr as , χ = ( μr - 1 )
H is magnetising field which is given by, H = n × i ,
where n is numer of turns per unit length in solenoid and i is the current passing through solenoid.
 
Hence magnetisation M = ( μr - 1 )× n × i = 999 × 300 × 0.5 ≈ 1.5 ×105 A m-1 
 
magnetic moment = M × V
 
where V is volume
 
magnetic moment = 1.5 × 105 × ( 0.2 × π × 102 × 10-6 / 4 ) = 2.356 A m2
Answered by Thiyagarajan K | 03 Oct, 2019, 06:41: PM

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