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A Rowland ring of mean radius 15 cm has 3500 turns of wire wound on a ferromagnetic core of relative permeability 800. What is the magnetic field B in the core for a magnetising current of 1.2 A ? |
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Answer» Solution :`R=15 CM, N = 3500,mu_r=800 ""B = ? , I = 1.2 A` `B=(mu_0mu_rNI)/(2piR)=(4PIXX10^(-60)xx800xx3500xx1.2)/(2pixx15xx10^(-12))=4.48T` |
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