current in no resistance wire

Electricity and Magnetism Level 3

Find current in wire AB in the shown circuit diagram with proper sign. If your answer with sign is "x" amperes. Then find x.


The answer is 10.

Priyesh Pandey by Priyesh Pandey , 24, India

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2 solutions

Priyesh Pandey
Mar 4, 2015

Using Kirchoff's law in the indicated circuit. We find I 1 = 6 11 I { I }_{ 1 }=\frac { 6 }{ 11 } I . and I=110A On solving further we get I(2) i.e is current in AB branch = (1/11)*(I)=10 A

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No need of KCL or KVL in this question It can be done by simple series - parallel combination of resistors

Chirayu Bhardwaj - 5 years, 4 months ago
Aashish Patel
May 17, 2016

First find the equivalent resistence of the circuit. As the wire connects the two junctions remove the wire and join those points. R equivalent if 60/11.Find the current I=110 ohms. By following the symmetrical distribution of current it comes to be that the current in the wire is 10A.

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