Question

The temperature coefficient of a zener mechanism is

• A. negative
• B. positive
• C. infinity
• D. zero

Hint:

Zener diodes have a negative temperature coefficient, meaning their breakdown voltage decreases with increasing temperature.

Answer 1

The Correct Option is A

Step 1: Zener Diode Characteristics.
Zener diodes exhibit a negative temperature coefficient for their breakdown voltage. As the temperature increases, the breakdown voltage decreases.

Step 2: Conclusion.
Therefore, the correct answer is option (A).

Final Answer: \[ \boxed{\text{(A) negative}} \]