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The effective inductance of two coils with self inductances L1, L2 and mutual inductance M (as connected shown in figure) will be:
  • a)
    L1 + L2 + M
  • b)
    L1 - L2 - 2M
  • c)
    L1 + L+ 2M
  • d)
    L1 + L2 - 2M
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
The effective inductance of two coils with self inductances L1, L2and ...
 Whenever more than one inductors come in closer, there may be mutual induction between them.
If more than one inductor is connected in series and the flux of one inductor links the other, we have to consider mutual inductance during equivalent inductance calculations.
If a circuit contains two inductors of self-inductance L1​ and L2​ in series as shown in the figure. If M is the mutual inductance, then find the effective inductance of the circuit shown.
Leq = L+ L2 + 2M
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The effective inductance of two coils with self inductances L1, L2and mutual inductance M (as connected shown in figure) will be:a)L1+ L2+ Mb)L1- L2- 2Mc)L1+ L2+ 2Md)L1+ L2- 2MCorrect answer is option 'C'. Can you explain this answer?
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