Question 1 :
The depletion layer in the pn junction region is caused by

Question 4 :
The circuit has two oppositely connected ideal diodes in parallel. What is the current through in the battery?<br><img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5dedf9e02cbd216b6cb2b178"><br>

Question 6 :
In a transistor, a change of {tex} 8.0 \mathrm { mA } {/tex} in the emitter current produces a change of {tex} 7.9 \mathrm { mA } {/tex} in the collector current. The base current changes by

Question 9 :
Electronic configuration of germanium is {tex} 2,8,18 {/tex} and {tex} 4 . {/tex} To make it an extrinsic semiconductor, a small quantity of antimony is added.

Question 11 :
A diode having a potential difference of {tex} 0.5 \mathrm { V } {/tex} across its junction, which does not depend on current, is connected in series with a resistance of {tex} 20 \Omega {/tex} across a source. If {tex} 0.1 \mathrm { A } {/tex} passes through the resistance, then the voltage of the source is

Question 12 :
While the collector to emitter voltage is constant in a transistor, the collector current changes by {tex} 8.2 \mathrm { mA } {/tex} when the emitter current changes by {tex} 8.3 \mathrm { mA } {/tex}. The value of current gain {tex} \beta {/tex} is

Question 13 :
A transistor is operated in common emitter configuration at {tex} \mathrm{V _ { c }} = 2 \mathrm { V } {/tex} such that a change in base current from {tex} 100 \mu \mathrm { A } {/tex} to {tex} 200 \mu \mathrm { A } {/tex} produces a change in the collector current from {tex} 5 \mathrm { mA } {/tex} to {tex} 10 \mathrm { mA } {/tex}. The current gain is

Question 14 :
A common emitter transistor amplifier has a current gain of {tex} 50 . {/tex} If the load resistance is {tex} 4 \mathrm { k } \Omega {/tex} and input resistance is {tex} 500 \Omega {/tex}, the voltage gain of the amplifier is:

Question 18 :
When a {tex} p - n {/tex} diode is reverse biased, then

Question 19 :
Let {tex}n_p{/tex} and {tex}n_e{/tex} be the number of holes and conduction electrons respectively in a semiconductor. Then

Question 20 :
In a transistor circuit, when the base current is increased by {tex}50{/tex} micro-amperes keeping the collector voltage fixed at {tex}2{/tex} volts, the collector current increases by {tex}1 \ \mathrm {mA} {/tex}. The curent gain of the transistor is:

Question 21 :
On increasing the reverse bias to a large value in a pn junction diode, the current

Question 22 :
Consider an n-p-n transistor amplifier in common-emitter configuration. The current gain of the transistor is {tex}\mathrm{100}{/tex}. If the collector current changes by {tex} 1 \mathrm { mA } , {/tex} what will be the change in the emitter current?<br>