Question

5. When load current is zero, the zener current will be .........​

Answer 1

Answer:

When load current is zero, the zener current will be 0.

Explanation:

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Answer 2

Maximum

• A parallel voltage regulator is a Zener diode.
• It has a Zener voltage as well as a minimum and maximum current.  
• If we need a higher fluctuation between the min and max Zener currents, we may be required to use a higher power diode.  
• The Zener and the load are fed from the same power source via a dropping resistor.
• It lowers the voltage between the source and the Zener voltage.  
• The load and the Zener both share the feed current.  

• When the load current drops, the Zener current rises and vice versa, maintaining the total current while keeping the Zener voltage across the load constant.  
• The Zener may be shorted if the Zener current exceeds the maximum value.  
• If the Zener current falls below the minimum, the Zener may come out of the Zener breakdown area.
• It causes the load voltage to rise.

Thus, when load curent is zero, The zener current will be maximum.