How is the induced current in a secondary coil related to current in a primary coil ?
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In mutual induction current will be induced in both the primary and secondary.
Let i1 be the current in the primary coil M21 represents the mutual induction of 2ndary coil w.r.t. primary coil.
Thus emf developed in the 2ndary coil due to current in primary will be
E21 = - M21di1 /dt
Due to the emf a current i2 is developed in the 2ndary
emf developed in the primary coil due to current in 2ndary will be
E12 = - M12di2 /dt
We have M21 = M12
Let i1 be the current in the primary coil M21 represents the mutual induction of 2ndary coil w.r.t. primary coil.
Thus emf developed in the 2ndary coil due to current in primary will be
E21 = - M21di1 /dt
Due to the emf a current i2 is developed in the 2ndary
emf developed in the primary coil due to current in 2ndary will be
E12 = - M12di2 /dt
We have M21 = M12
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Answer:
An alternating current passes through a primary coil wrapped around a soft iron core. The changing current produces a changing magnetic field. This induces an alternating voltage in the secondary coil. This induces an alternating current (AC) in the circuit connected to the secondary coil
Explanation:
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