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    current in a 48.1 mH inductor changes with time

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    The current in a 48.1 mH inductor changes with time as I = bt^2 - at. With a = 2.7 A/s and b = 3 A/s^2, find the magnitude of the induced emf at t = .992 s. Units of V

    At what time is the emf zero? Units of s

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    https://brainmass.com/physics/emf/current-in-a-48-1-mh-inductor-changes-with-time-10589

    Solution Preview

    i = bt^2 - at = 3t^2 - 2.7t
    <br>=> di/dt = 6t - 2.7
    <br>induced emf ...

    $2.49

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