I just want to make sure I got the right answers for these two questions...
1)If a current of 6A/s in one coil induces a 3V potential in another coil, what is the mutual inductance? I got 0.5 H
2)An ideal transformer connects a 120-V source to a 12-V, 1-A load. The secondary has 90 turns. Determine the number of turns in the primary, which I got 108. And determine the source current which I think is 10A but i'm not sure...

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@radar @Fifciol

For the second question i did Npri/Vpri=Nsec/Vsec

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