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Explain why the frequency cutoff for RL circuits is given by $\frac{R}{2\pi L}$
This is where the 0.7 comes from:
Single pole low pass frequency responses are in written in the form:
$$ A_v=\dfrac{1}{\sqrt{1+\left( \dfrac{\omega}{\omega_{co}}\right) ^2}}=\dfrac{1}{\sqrt{1+\left( …