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Magnetics question

2007 · Shift 0 · Q75
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Magnetics question

2007 · Shift 0 · Q75

JEE MainPhysicsMagneticsMCQ+4 / −1
A current III flows along the length of an infinitely long, straight, thin walled pipe. Then
  1. A
    the magnetic field at all points inside the pipe is the same, but not zero
  2. B
    the magnetic field is zero only on the axis of the pipe
  3. C
    the magnetic field is different at different points inside the pipe
  4. D
    the magnetic field at any point inside the pipe is zero
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