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Two cells having 50 and 200 tunns respectively are wound side by side on a closed magnetic circuit of cross-section 1.5x10m and mean length

Two cells having 50 and 200 tunns respectively are wound side by side on a closed magnetic circuit of cross-section 1.5x10m and mean length 3m. The relative permeability of magnetic cincurt is 2000 Calculate, 2 . (i) Flutual inductance between coils (ii) The voltage induced in the 2nd coil, if current changes from 0 to 10A in first ceil in 20ms

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