A circular loop of wire with radius 0.0450 m and resistance 0.154 R is in a region of spatially uniform magnetic. The magnetic field is directed out of the plane. The magnetic field has an initial value of 7.89 T and is decreasing at a rate of -0.630 T/s.
What is the rate at which electrical energy is being dissipated by the resistance of the loop?
I know that the rate is equal to P = I^2R
So I have to find the induced emf to find the current I.
I tried to find the induced emf using Faraday's Law and got 4.01*10^-3 V. But I don't know what to do with the initial value of the magnetic field 7.89 T.
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