MEDIUM
12th ICSE
IMPORTANT
Earn 100

A p-n junction diode is connected to a series resistor of 100 Ω and a 4.5 V DC battery The barrier potential at the junction is 0.5 V. Find the current in the circuit.

Important Questions on Junction Diodes

HARD
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 19 - Junction Diodes>QUESTIONS>Q 1

In the following figure, the diodes which are forward biased are:

Question Image

Question Image 

HARD
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 19 - Junction Diodes>QUESTIONS>Q 2
The order of magnitude of the barrier potential in a p-n junction is:
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 19 - Junction Diodes>QUESTIONS>Q 3
The depletion layer in the p-n junction is formed by:
HARD
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 19 - Junction Diodes>QUESTIONS>Q 4
The resistance of a forward-biased p-n junction is:
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 19 - Junction Diodes>QUESTIONS>Q 5
A junction diode can be used for:
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 19 - Junction Diodes>QUESTIONS>Q 6
For detecting light intensity, we use :
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12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 19 - Junction Diodes>QUESTIONS>Q 7
A p-n junction diode cannot be used:
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 19 - Junction Diodes>QUESTIONS>Q 1

What is the magnitude of the potential barrier across a p-n junction?