A 5 mA changes in Zener current produces a 50 mA change in Zener voltage. What is the Zener impedance ? December 22, 2018 – by admin A 5 mA changes in Zener current produces a 50 mA change in Zener voltage. What is the Zener impedance ? A. 1 O B. 1 O C. 100 OD. 10 O