InterviewSolution
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InterviewSolution
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Relation between the magnetic field vectorvec(B) and magnetic intensityvec(H) at a point in a magnetic field vec(B)=muvec(H) wheremuis the mangnetic permeability of the medium in which the point is situated . Magnetic permeability of vacuum mu_(0)=4pixx10^(-7)H.m^(-1) . Thus the relative magnetic permeability of the mediummu_(r)-(mu)/(mu_(0)) . To define the magnetic field at a point in a medium another vector needs mention , which is magnetisationvec(M). The magnetic field is known as the magnetisation of the point . In most cases vec(M)propvec(H) "or,"vec(M)=kvec(H),this k is called the magnetic susceptibility of the medium . The relation among these vectors is expressed as vec(B)=mu_(0)(vec(H)+vec(M)). Magnetic field at the same point(inWb.m^(-2) )is |
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Answer» `4.2xx10^(-7)` |
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