Electronics - Diodes and Applications - Discussion


The dc current through each diode in a bridge rectifier equals:

[A]. the load current
[B]. half the dc load current
[C]. twice the dc load current
[D]. one-fourth the dc load current

Answer: Option A


No answer description available for this question.

Thembs said: (May 31, 2011)  
They are connected in parallel.

R.A.Chaudhari said: (Jan 7, 2012)  
They are connected in series.

Pradheep H N said: (Jan 14, 2012)  
All diodes are connected in series with load so; in branch the current is same. ANS (A).

Ambrish Pandey said: (Jan 28, 2012)  
All diodes are connected in series and in + forward bias diode is on and in - reverse bias diode is on. So in all cases the diode is in farword bias and it will open so it will equal to the load current.

Balwinder Singh said: (Mar 4, 2013)  
If we use 1, 2, 3, 4 diodes, when +ve cycle of ac is appeared across diode 1, then it will conduct and diode 2 will block full ac current then how will the diode 3 will get +ve cycle to conduct because full ac current is blocked by diode 2 which is connected in between diode 3 and diode 1 ?

Priyanka said: (Jun 29, 2013)  
As diodes are in series current flowing through them will equal to load current.

Shreedhar said: (Oct 6, 2013)  
First 2 diodes area connected in series and another 2 are also. But these 2 groups are connected in parallel. And the values of these diodes are selected such that the circuit should be balanced. Therefore load current is equal.

Ajay said: (Nov 11, 2013)  
Those are connected in series thats why the same resistance available in all diodes.

Ashraful Islam said: (Nov 1, 2014)  
When d1 and d3 forward bias, this time full current flow between this diode and reverse bias this time full current flow between d2 and d4.

Abhinav said: (Apr 3, 2015)  
Someone please explain.

Half the time current is flowing from one set of 2 diodes and the other two for the next half. So basically the current is available only for half time period for any diode. While current is available for whole time at load. In this manner isn't each diode carrying half of load DC current?

Shekhar said: (Jun 24, 2015)  
Dear, here input given to the diode is dc (not ac) that's why through the whole time period a pair of diode is forward biases and others in reverse biases. So current through pair of diode which is in forward biases is equal to load and others have zero.

Subash Chandra Pakhrin said: (Jul 26, 2015)  
In series configuration current is same, so during the positive half cycle of sine wave diode d1 and d3 will conduct through the load resister, so current will be same same thing commensurate for the the negative half cycle of the sine wave.

Ammu said: (Aug 23, 2017)  
Please, anyone explain clearly.

Sangeetha said: (Dec 31, 2018)  
Anyone explain what is the difference between ac and dc?

Shubham said: (Feb 23, 2019)  
AC - alternating current, its polarity will change with cycle (+ or -).

DC - Direct Current fixed.

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