Q.

A solenoid has core of a material with relative permeability 501 , its winding carry a current of 1 A and the number of turns of solenoid is 500 per meter. The magnetization of the material is

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a

2.5×103 A-m-1

b

2.5×105 A-m-1

c

2×103 A-m-1

d

2×105 A-m-1

answer is B.

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Detailed Solution

Given :  n=500 turns/m i=1 Aμr=501 Now, Magnetic susceptibility 'χ', Magnetic intensity=H,H=ni = 500×1=500 A-m-1And  χ=μr−1Magnetization  M=χ.H ⇒M=μr−1H =500×500=2.5×105A-m-1.
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A solenoid has core of a material with relative permeability 501 , its winding carry a current of 1 A and the number of turns of solenoid is 500 per meter. The magnetization of the material is