Question

सेल्फ एंड यू सर इस एबिलिटी ऑफ़ वन इंडस्ट्रीज इंट्रोड्यूस वोल्टेज एक्रॉस नेबरहुड इंडक्टर​

Answer 1

While the current flowing between points A and D through the two cumulatively coupled coils is in the same direction, the equation above for the voltage drops across each of the coils needs to be modified to take into account the interaction between the two coils due to the effect of mutual inductance. The self inductance of each individual coil, L1 and L2 respectively will be the same as before but with the addition of M denoting the mutual inductance.