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The magnetic flux through a metal ring varies with time t according to B = 3( at 3 - bt 2) Tm2, with a = 2.00 s-3 and b = 6.00 s-2. The resistance of the ring is 3.20 . Determine the current induced in the ring at t = 1.00 s.

I know that you have to take the integral of B. The equation that I came up with is emf=-n*integral of B*di/dt

I don't know if that is right though..help!