An amplifier has a gain-bandwidth product of 200 MHz. A feedback network is added that has a feedback factor (1 + βA) of 18.88. What is the gain-bandwidth product for the circuit with the added feedback network? ( )
1.In the Zener region the current ________ and the voltage across the diode ( ).A:is almost constant; can increase a lotB:can increase a lot; can increase a lotC:is almost constant; is almost constantD:can increase a lot; is almost cons