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The position of point from wire b where net magnetic field is zero due to following current distribution

The position of point from wire b where net magnetic field is zero due to following current distribution 

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Grade:12th pass

2 Answers

Arun
25757 Points
4 years ago
 
magnetic field is is directly proportional to I/r
THen in first question
5I/(6-x) = 2I/x
5x = 12 – 2x
x = 12/7 cm.
 
Regards
Arun
Khimraj
3007 Points
4 years ago
Suppose P is the point between the conductors where net magnetic field is zero.
So at P |Magnetic field due to conductor 1| = |Magnetic field due to conductor 2|
μ04π2(5i)i=μ04π2(2i)(6−x)⇒5x=96−x⇒x=307cmμ04π2(5i)i=μ04π2(2i)(6−x)⇒5x=96−x⇒x=30/7cm
Hence position from B=6−307=12/7cm
 

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