In a zener regulated power supply a zener diode with
` V_z = 6.0 V` is used for regualtion. The load current is to eb 4.0 mA and the
unregulated input is 10.0 V . What should be the value of series resistor R?

Explanation

To find the value of the series resistor \( R \) in a Zener regulated power supply, we can follow these steps:

### Step 1: Identify the given values
- Zener voltage \( V_z = 6.0 \, V \)
- Load current \( I_L = 4.0 \, mA = 4.0 \times 10^{-3} \, A \)
- Unregulated input voltage \( V_{in} = 10.0 \, V \)

### Step 2: Assume a Zener current
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