Two coils are wound on the same iron rod so that the flux generated by one passes
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Two coils are wound on the same iron rod so that the flux generated by one passes through the other also. The primary coil has Np loops and, when a current of 2.0 A flows through it, the flux in it is 2.5 × 10-4 Wb. Determine the mutual inductance of the two coils if the secondary coil has Ns loops.
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