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A solenoid has a core of a material with...

A solenoid has a core of a material with relative permeability 400. The windings of the solenoid are insulated from the core and carry a current of 2A. If the number of turns is 1000 permetre, calculate
(a) H

Text Solution

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Intensity of magnetisation (I)
`I= (B-mu_(0)H)/mu_(0) = (mu_(r)mu_(0)H-mu_(0)H)/Hmu_(0) =(mu(r)-1)H= 399 x×H`
`=8xx10^(5)A//m`
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