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Two solenoids A and B spaced close to ea...

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 `3.50A` in coil `A` produced an average flux of `300muT-m^2` through each turn of `A` and `a` flux of `90.0mT-m^2` 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 `0.5A//s`?

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A, B, C, D
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Knowledge Check

  • Two coils A and B have 200 and 400 turns respectively. A current of 1 A in coil A causes a flux per turn of 10^(-3) Wb to link with A and a flux per turn of 0.8xx10^(-3) Wb through B. the ratio of mutual inductance of A and B is

    A
    0.625
    B
    1.25
    C
    1.5
    D
    1.625

  • What is the mutual inductance of coil and solenid if a has a radius 4 cm and coil of 700 turns is would on the middle part of the solenoid ?

    A
    44.17 mH
    B
    48.94 mH
    C
    34.34 mH
    D
    36.73 mH

  • If the number of turns per unit length of a coil of solenoid is doubled, the self-inductance of the solenoid will

    A
    remain unchanged
    B
    be halved
    C
    be doubled
    D
    become four times

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