KEAM 2023 Physics and Chemistry Solved Paper

Question : 21 of 120

Marks: +1, -0

In a Zener regulated power supply circuit as shown in figure below, a Zener diode with Vz=10V is used for regulation. The load current, Zener current and unregulated input V‌in ‌ are 5‌mA,35‌mA and 20V, respectively. The value of R is :