The rate at which the magnetic flux inside a wire loop decays is given by (Phi_{B}(t)=Phi_{B, i}

Question:

The rate at which the magnetic flux inside a wire loop decays is given by $\Phi_{B}(t)=\Phi_{B, i} e^{-\beta t}$, where $\beta=0.50 / \mathrm{s}$ and $\Phi_{B, i}=4.0 \mathrm{~Wb}$. What is the magnitude of the induced current at $t=10 \mathrm{~s}$ if the resistance of the wire is $R=2.0 \mathrm{~V} / \mathrm{A}$ ?

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