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GATE ECE 1995 | Question 1.3

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Two $2 \; \mathrm{H}$ inductance coils are connected in series and are also magnetically coupled to each other the coefficient of coupling being $0.1$. The total inductance of the combination can be

  1. $0.4 \; \mathrm{H}$
  2. $3.2 \; \mathrm{H}$
  3. $4.0 \; \mathrm{H}$
  4. $3.3 \; \mathrm{H}$
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