MEDIUM
12th ICSE
IMPORTANT
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What is the use of Zener diode?

Important Questions on Junction Diodes

MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 19 - Junction Diodes>QUESTIONS>Q 1
What is a junction diode?
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 19 - Junction Diodes>QUESTIONS>Q 2
What is potential barrier in a junction diode?
HARD
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 19 - Junction Diodes>QUESTIONS>Q 3

What do you mean by ‘biasing’ of a junction diode? Give its types.

MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 19 - Junction Diodes>QUESTIONS>Q 4

Draw a circuit diagram of a forward-biased p-n junction.

HARD
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 19 - Junction Diodes>QUESTIONS>Q 5

Draw a circuit diagram of a p-n junction under reverse bias, using proper symbol for diode (not rectangular block).

HARD
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 19 - Junction Diodes>QUESTIONS>Q 6
Why do we get a small current (in μA) through a p-n junction diode under reverse bias condition? In which direction does this current flow through the junction?
HARD
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 19 - Junction Diodes>QUESTIONS>Q 7

Draw V-I characteristic curve for a p-n junction diode. Show the Zener voltage on the curve.

MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 19 - Junction Diodes>QUESTIONS>Q 8
Define ‘dynamic resistance’ of a p-n junction diode.