Question: The current in a 9 0 . 0 - mH inductor changes with time W as i 5 1 . 0 0 t 2 2

The current in a 90.0-mH inductor changes with time
W as i 51.00t226.00t, where i is in amperes and t is in seconds. Find the magnitude of the induced emf at (a) t 51.00 s and (b) t 54.00 s.(c) At what time is the
emf zero?

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