Question

For a Zener diode, if Vz 1=10 V, Iz 1=10 mA; and Vz 2=10.1 V, Iz 2=60 mA. Please find:

A) Rs=0.1 ohms
B) Rs=1 ohm
C) Rs=10 ohms
D) Rs=100 ohms

Answer 1

The calculated series resistance (Rs) based on the given change in voltage and current for a Zener diode is 2 ohms, which does not match any of the provided options.

Step-by-step explanation:

The student is asking for help to determine the series resistance (Rs) given some parameters of a Zener diode at two different operation points. This involves applying Ohm's law and the concept of a voltage drop across a resistor. To find Rs, we need to look at the change in voltage (ΔV) and the change in current (ΔI) between the two points. The change in voltage is the difference between Vz2 and Vz1, which is 10.1 V - 10 V = 0.1 V. The change in current is the difference between Iz2 and Iz1, which is 60 mA - 10 mA = 50 mA or 0.05 A.

Apply Ohm's law (V=IR) to determine Rs:

Rs = ΔV / ΔI = 0.1 V / 0.05 A = 2 ohms

However, none of the options provided matches the calculated value. It appears there's an error with the provided options or a mistake in the calculation. Assuming the student's options A-D were meant, no option corresponds to the determined value of Rs.