When voltage stabilisation is effective? How zener diode is used for this ?

A zener diode is used as

A Zener diode

A zener diode is destroyed if it

A photo diode is used in

The correct symbol for zener diode is

When a zener diode is used as a voltage stabiliser, it is connected i. in series with a load. ii. in parallel with a load. iii. in forward bias. iv. in reverse bias.

Why is a resistance connected in series with a zener diode when used in a circuit?

Aseries resistance is connected is the zener diode circuit to:

in LED, to avoid damage to the diode ___is used

When a voltage measuring device is connected to ac mains, the meter shows the steady input voltage of 220 V.This means