There are $10$ turns in coil $M$ and $15$ turns in coil $N$. If a current of $2\ A$ is passed through coil $M$,then the flux linked with coil $N$ is $1.8 \times 10^{-3}\ Wb$. If a current of $3\ A$ is passed through coil $N$,then the flux linked with coil $M$ is:
- A$1.2 \times 10^{-3} \ Wb$
- B$2.7 \times 10^{-3} \ Wb$
- C$1.8 \times 10^{-3} \ Wb$
- D$4.05 \times 10^{-3} \ Wb$
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