Question
Physics Question on Semiconductor electronics: materials, devices and simple circuits
In a Zener regulated power supply circuit as shown in figure below,a Zener diode with Vz=1OV is used for regulation. The load current,Zener current and unregulated input Vin are 5mA,35mA and 20V,respectively. The value of R is:
A
1000Ω
B
750Ω
C
250Ω
D
100Ω
E
500Ω
Answer
250Ω
Explanation
Solution
The correct answer is (C): 250Ω