Subject: Physics, asked on 28/2/18

## Q.6. Determine the currents through resistance R of the circuits (i) and (ii) when similar diodes are connected as shown in the figure. Subject: Physics, asked on 27/2/18

## Is photodiode reverse biased.. Plz explain

Subject: Physics, asked on 27/2/18

## Do Cbse ppp cut marks if we draw diagrams which are not in NCERT but mean same?

Subject: Physics, asked on 27/2/18

## When Zener diode is used as a voltage regulator, what happens to the extra voltage and current? Where does it go?

Subject: Physics, asked on 26/2/18

## Identify the biasing in B and C ??

Subject: Physics, asked on 26/2/18

## Pls solve this and tell the formulad used. Find R(c) Question 12. In the circuit shown in figure, find the value of ${R}_{C}$.

Subject: Physics, asked on 26/2/18

## Solve this: Question 11. For the transistor circuit shown in figure, evaluate . Given .

Subject: Physics, asked on 25/2/18

## Q.6. What is the current flowing in ${R}_{2}$ in the circuit shown in figure. Given : .

Subject: Physics, asked on 25/2/18

## why in a transistor is the forward bias voltage always smaller than the reverse bias voltage

Subject: Physics, asked on 24/2/18

## Que 31 plz with explanation Q.31. Identify the logic gates X and Y in the figure. Write down the truth table of output Z for all possible inputs A and B.

Subject: Physics, asked on 23/2/18

## solve 30 qsn or part neeche waala whole nd explain it...

Subject: Physics, asked on 23/2/18

## what is 'r' in this expression and and how did delta IB come? even in  the circuit diagram there is no 'r' its only R

Subject: Physics, asked on 22/2/18

## Solve this: Q.18. The current in the forward bias is known to be more ($~$mA) than the current in the reverse bias ($~\mu$A). What is the reason, to operate the photodiode in reverse bias?

Subject: Physics, asked on 22/2/18

## in the ques as asked why the zener diode is heavily doped the answer is given as, it is done to reduce the depletion region but isnt this the case when a diode is in forward bias?(in forward biads depletion region decreases) whereas zener diode is operated in reverse breakdown region right? so dosent this answer contradict the basic fact about zener diode that it is operated in reverse breakdown region and so the depletion region should infact be more but we are doping it so that the region becomes less? pls explain

Subject: Physics, asked on 22/2/18
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