Assertion: Zener diode works on aa principle of of breakdown voltage.
Reason: Current increases suddenly after breakdown voltage.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true not but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false
D. If both assertion and reason are false.

Explanation

To analyze the given assertion and reason regarding the Zener diode, we can break down the solution into the following steps:

### Step 1: Understanding the Assertion
The assertion states that "Zener diode works on the principle of breakdown voltage."
- A Zener diode is designed to operate in reverse bias and is characterized by its ability to maintain a constant voltage (Zener voltage) across it when the reverse voltage exceeds a certain threshold known as the breakdown voltage.

### Step 2: Understanding the Reason
The reason states that "Current increases suddenly after breakdown voltage."
- When the reverse voltage applied to a Zener diode exceeds the breakdown voltage, the diode enters the breakdown region. In this region, the Zener diode allows a significant increase in current while maintaining a constant voltage across its terminals.

### Step 3: Analyzing the Relationship
- The assertion is true because the Zener diode indeed operates based on the principle of breakdown voltage.
- The reason is also true because, after reaching the breakdown voltage, the current through the Zener diode increases significantly while the voltage remains stable.

### Step 4: Conclusion
Since both the assertion and the reason are true, and the reason correctly explains the assertion, we conclude that the assertion is true and the reason is a correct explanation of the assertion.

### Final Answer
Both the assertion and reason are true, and the reason is the correct explanation for the assertion.

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