Moving Charges And Magnetism Class 12 Notes | EduRev

Class 12 : Moving Charges And Magnetism Class 12 Notes | EduRev

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Two parallel, long wires carry currents i1 and i2 with i1 > i2. When the current are in the same direction, the magnetic field at a point midway between the wire is 10 mT. If the direction of i2 is reversed, the field becomes 30mT. The ratio i1/i2 is
  • a)
    4
  • b)
    3
  • c)
    2
  • d)
    1
Correct answer is option 'C'. Can you explain this answer?

Ref: https://edurev.in/question/570460/Two-parallel-long-wires-carry-currents-i1-and-i2-

Moving Charges And Magnetism Class 12 Notes | EduRev

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