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What is the total current in the circuit?

Question asked by Vontari Keerthana in #Electronics on Feb 22, 2019
Vontari Keerthana
Vontari Keerthana · Feb 22, 2019
Rank D3 - MASTER

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Is it 4.9A or 6.6A ?

There are three sections 1-2, 2-3, 1-3 and tapping is done in series.    

What is the total current ?

Posted in: #Electronics
Mohit Patil
Mohit Patil · Feb 22, 2019
Rank C2 - EXPERT

6.6A is the right answer. 

Vontari Keerthana
Vontari Keerthana · Feb 22, 2019
Rank D3 - MASTER

can you explain


Kaustubh Katdare
Kaustubh Katdare · Feb 22, 2019
Rank A1 - PRO

@Vontari Keerthana - Better approach would be to explain how you arrived at two different answers. Could you give it a try?

Vontari Keerthana
Vontari Keerthana · Feb 22, 2019
Rank D3 - MASTER

As they are in series I1 and I3 adds.

But as there is tapping im a little bit confused.

So can you help me out of it.

Vontari Keerthana
Vontari Keerthana · Feb 23, 2019
Rank D3 - MASTER

@Kaustubh Katdare  please suggest what is the correct answer and complete solution.


I have got 4.9A, but my friend is saying that it may be 6.6A.


Vontari Keerthana
Vontari Keerthana · Feb 23, 2019
Rank D3 - MASTER

@Mohit Patil Thanks for your answer

Ramani Aswath
Ramani Aswath · Feb 23, 2019
Rank A1 - PRO

@Vontari Keerthana , you were right.  The tapping at the middle two resistors joining the middle of the two battery banks can be ignored because there is no potential difference between the two ends of the wire.

Therefore, the total current will be the sum of the currents in the two parallel lines.

The current through the two resistors in series will be 31/(9.05+9.05)=1.713 A, the current in the other line is 31/9.5=3.26 A totaling 4.976 A.

Vontari Keerthana
Vontari Keerthana · Feb 23, 2019
Rank D3 - MASTER

Thank you sir @Ramani Aswath 

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