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emf induced in secondary

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The mutual inductance of two coils is 0.750 H. Calculate the average emf induced in secondary if the current in the primary reaches 6.00 A in 0.030 sec.

A) 150 V

B) 0.00375 V

C) 0.135 V

D) -150 V

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Calculate the average emf induced in secondary

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Emf=M*(dI/dt)=0.75*(6/0.03)=150 (V)
<br>However, in order to decide if emf in the secondary coil is positive or ...

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