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Grade 12th passMagnetism

Position of point B where net magnetic field is zero

Question image for Position of point B where net magnetic field is z
Profile image of Ankita belkhade
7 Years agoGrade 12th pass
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2 Answers

Profile image of Pooja
7 Years ago
The point will lie outside the system carrying current in opposite directions and nearer to smaller magnitude current.
 
Let its distance from wire B be x
So magnetic field in both upward and downward direction will be equal
 
I1/r1 = I2/r2
5/(6+x)=2/x
5x = 12 + 2x
x = 4 cm from wire B
 
 
Profile image of Khimraj
7 Years ago
 
I1/r1 = I2/r2
5/(6+x)=2/x
5x = 12 + 2x
x = 4 cm 
…............................................................

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