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CBSE - XII Science - Physics - Semiconductor Electronics
Explain with the help of a suitable diagram, the two processes which o ccur during the formation of a p-n junction diode. Hence define the terms (i) depletion region and (ii) potential barrier. (b) Draw a circuit diagram of a p-n j unction diode under forward bias and explain its working. (5M)
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14th November 2017,
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CBSE - XII Science - Physics - Semiconductor Electronics
1. Can u explain how barrier potential is opposite to the applied voltage in forward bias an why applied voltage decreases in depletion region.
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CBSE - XII Science - Physics - Semiconductor Electronics
why is the direction of electric field marked as positive to negative in the depletion region?
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16th August 2017,
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CBSE - XII Science - Physics - Semiconductor Electronics
Can you explain the concept of barrier potential using a diagram showing the direction of electric field in the case of forward and reverse bias?
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16th August 2017,
7:32 AM
CBSE - XII Science - Physics - Semiconductor Electronics
Why can't we physically join p-type and n-type semiconductors directly to form a p-n junction? Why the depletion layer widens on doing so?
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CBSE - XII Science - Physics - Semiconductor Electronics
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CBSE - XII Science - Physics - Semiconductor Electronics
What is the direction of the diffusion current in the PN Junction ( n-type to p-type or p-type to n-type )?
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Asked by damarlasumanjali
23rd July 2015,
10:16 AM
CBSE - XII Science - Physics - Semiconductor Electronics
(a) Explain with the help of a diagram, how depletion region and potential barrier are formed in a junction diode. (b) If a small voltage is applied to a p-n junction diode, how will the barrier potential be affected when it is (i) forward biased, and (ii) reveres biased?
Asked by Topperlearning User
10th July 2015,
7:47 AM
CBSE - XII Science - Physics - Semiconductor Electronics
What happens when a forward bias is applied to a p-n junction?
Asked by Topperlearning User
8th July 2015,
11:39 AM
CBSE - XII Science - Physics - Semiconductor Electronics
Explain how a depletion region is formed in p-n junction diode
Asked by Tanya
14th January 2015,
11:50 AM
CBSE - XII Science - Physics - Semiconductor Electronics
If the forward voltage in a semiconductor diode is changed from 1 to 2.5 V, then the forward current changes by 1.5 mA. What is the resistance of junction diode?
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19th June 2014,
11:08 AM
CBSE - XII Science - Physics - Semiconductor Electronics
Give the barrier potential of : silicon germanium
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19th June 2014,
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CBSE - XII Science - Physics - Semiconductor Electronics
How does an ideal diode behave when forward biased and reverse biased?
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18th June 2014,
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CBSE - XII Science - Physics - Semiconductor Electronics
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18th June 2014,
11:15 AM
CBSE - XII Science - Physics - Semiconductor Electronics
a) In the depletion region of an unbiased p-n junction diode, what are the charge carriers? b)Which biasing makes the junction resistance low and which high?
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18th June 2014,
11:05 AM
CBSE - XII Science - Physics - Semiconductor Electronics
Name the different types of currents flowing through a p-n junction diode.
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18th June 2014,
10:52 AM
CBSE - XII Science - Physics - Semiconductor Electronics
Can we measure the potential difference of a p-n junction by putting a sensitive voltmeter across its terminals?
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18th June 2014,
10:48 AM
CBSE - XII Science - Physics - Semiconductor Electronics
What do you mean by depletion layer and potential barrier for a p-n junction.
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18th June 2014,
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CBSE - XII Science - Physics - Semiconductor Electronics
What is an intrinsic semiconductor? How can this material be converted into (i) P- type (ii) N- type extrinsic semiconductor? Explain with the help of energy band diagrams.
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4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Semiconductor Electronics
How does the width of the depletion region of a p-n junction vary, if the reverse bias applied to it decrease ?
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4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Semiconductor Electronics
What all techniques need to be used to obtained p-n junction?
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4th June 2014,
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