Answer
$L=0.600$ mH
Work Step by Step
We know that;
$emf=L\frac{dI}{dt}$
This can be rearranged as:
$L=\frac{emf}{\frac{di}{dt}}$
Next, substitute the values and solve:
$L=\frac{0.003}{5}=0.0006H=0.600\times 10^{-3}=0.600mH$
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