Q69. A 10 V battery, 250 2 resistor and a Zener diode are connected in series such that the Zener diode is reverse biased. If the Zener breakdown voltage is 5 V, the current flowing through this diode is (a) 40 mA (b) 20 mA (c) 25 mA (d) 10 mA
answer is option B : 20mA , the important point to notice here is that when zener works in breakdown region ( as a voltage regulator) then it becomes a constant voltage battery wit...