Question: Two solenoids A and B, spaced close to each other and sharing the same cylindrical axis, have 400 and 700 turns, respectively. A current of

Two solenoids A and B, spaced close to each other and sharing the same cylindrical axis, have 400 and 700 turns, respectively. A current of 3.50 A in coil A produces an average flux of 300 μ Wb through each turn of A and a flux of 90.0 μ Wb through each turn of B.
(a) Calculate the mutual inductance of the two solenoids.
(b) What is the self-inductance of A?
(c) What emf is induced in B when the current in A increases at the rate of 0.500 A/s?

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