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Two circuits have coefficient of mutual induction of 0 09 henry Average e m f...

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Two circuits have coefficient of mutual induction of 0 09 henry Average e m f induced in the secondary by a change of current from 0 to 20 ampere in 0 006 second in the primary will be 1 120 V 2 80 V 3 200 V 4 300 V neet prep 2 3 A I following plots shows the variation of voltage in the coil with time CBSE PMT 1994 Mini Test 18 Mutual Inductance Self Inductance Contact Number 9667591930 8527521718 Pag The back emf induced in a coil when current changes from 1 ampere to zero in one milli second is 4 volts the self inductance of the coil is 1 1 henry 2 4 henry 3 10 henry 4 4 x 10 henry 12 The inductance of a closed packed coil of 400 turns is 8 mH A current of 5 mA is passed through it The magnetic flux through each turn of the coil is approximately 1 0 140 Wb 2 0 20 Wb 33 L

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