4.46 The small-signal model is said to be valid for voltage variations of about 5 mV. To what percentage current change does this correspond? (Consider both positive and negative signals.) What is the maximum allowable voltage signal (positive or negative) if the current change is to be limited to 10%?

4.46 The small-signal model is said to be valid for voltage

variations of about 5 mV. To what percentage current change

does this correspond? (Consider both positive and negative

signals.) What is the maximum allowable voltage signal

(positive or negative) if the current change is to be limited