What is a Zener diode?

What is Zener diode? How is it used as voltage regulator?

(i) What is Zener diode? (ii) Explain with circuit diagram how a Zener diode regulates voltage across a load resistance.

What is Zener diode? Draw its voltage vs current characteristics in the reverse bias and indicate the breakwon voltage on the characteristics. Mention one important use of this diode.

What is Zener diode?

What is zener diode? Draw the I-V characteristics graph of zener diode and explain it.