State the forward characteristic of zener diode, Physics

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Forward Characteristic of Zener diode

Connect the circuit demonstrated in fig (a) using the 5.1 V zener diode. For forward characteristic, reverse the connection of zener diode. Switch on the variable dc power supply. Observe and record voltage across the diode for different values of currents say, 1 mA, 10 mA and 30 mA. Current can be  varied  by  varying  the power supply  voltage. Observe and record corresponding voltage  too.   It  must be  evident  that  forward characteristic  is  similar  to  that  of  a junction rectifier diode as illustrated in below fig.(b).

 

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