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Current flowing in conductors A and B is same, what is the ratio of the magnetic field produced around the conductor A at a distance of 5 cm from the conductor to the magnetic field produced around the conductor B at a distance of 2 cm from this conductor is
  • a)
    0.04
  • b)
    0.4
  • c)
    4.0
  • d)
    10
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Current flowing in conductors A and B is same, what is the ratio of th...
Magnetic field produced is directly proportional to the current flowing and inversely proportional to the distance from the conductor. Since current flowing in both conductors is same only distance matters here. Since field is inversely proportional to distance ; 
B(A) / B(B)  = d(B) / d ( A) = 0.2/0.5 
=>  0.4 
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Most Upvoted Answer
Current flowing in conductors A and B is same, what is the ratio of th...
Magnetic field produced is directly proportional to the current flowing and inversely proportional to the distance from the conductor. Since current flowing in both conductors is same only distance matters here.

Since field is inversely proportional to distance,
B(A)/B(B) = d(B)/d(A) = 0.2/0.5 = 0.4
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Current flowing in conductors A and B is same, what is the ratio of th...
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Current flowing in conductors A and B is same, what is the ratio of the magnetic field produced around the conductor A at a distance of 5 cm from the conductor to the magnetic field produced around the conductor B at a distance of 2 cm from this conductor isa)0.04b)0.4c)4.0d)10Correct answer is option 'B'. Can you explain this answer?
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