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Position of point B where net magnetic field is zero

Position of point B where net magnetic field is zero

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Grade:12th pass

2 Answers

Pooja
127 Points
2 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
 
 
Khimraj
3007 Points
2 years ago
 
I1/r1 = I2/r2
5/(6+x)=2/x
5x = 12 + 2x
x = 4 cm 
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