Question

An iron ring has its mean length of flux path as 60 cm and its cross - sectional area as 15cm2, relative permeability of iron ring is 500 and current passing through the coil is 3.82 A, what would be the flux density , if the iron ring is replaced by air core. Flux density with iron ring is 1.2 Tesla
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Answer 1

Answer:

An iron ring of mean circumferential length 30 cm and cross-section 1 cm^(2) is wound uniformly with 300 turns of wire . When a current of 0.032 A flows in the windings , flux in the ring 2 xx 10^(-6) Wb . Find the flux density in the ring , magnetising field intensity and relative permeability of iron