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two inductor coils of L1=18mH and L2 =8mH are perfectly coupled if a current of 2A is reversed in first coil within 2 millisecond the emf induced in second coil will be a-
Asked by kookiewithsuga101 | 17 Aug, 2020, 22:08: PM
answered-by-expert Expert Answer
e m f equals L fraction numerator d i over denominator d t end fraction E M F space f o r space t h e space f i r s t space c o i l space w o u l d space b e e m f subscript 1 equals 18 cross times fraction numerator 2 over denominator 2 cross times 10 to the power of negative 3 end exponent end fraction e m f subscript 1 equals 18000 V a n d space w e space k n o w space t h a t space e m f proportional to L fraction numerator e m f subscript 1 over denominator e m f subscript 2 end fraction equals L subscript 1 over L subscript 2 fraction numerator 18000 over denominator e m f subscript 2 end fraction equals 18 over 8 e m f subscript 2 equals 8000 V
Answered by Utkarsh Lokhande | 20 Aug, 2020, 20:02: PM

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NEET neet - Physics
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