Exercise - Quiz
How is the output resistance of an amplifier defined?
$R_O = \Delta U_{\rm I} / \Delta I_{\rm O}$
$R_O = U_{\rm I} / I_{\rm O}$
$R_O = \Delta U_{\rm O} / \Delta I_{\rm O}$
$R_O = -\Delta U_{\rm O} / \Delta I_{\rm O}$
$R_O = U_{\rm O} / I_{\rm O}$
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