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Show the variation of magnetic field B w...

Show the variation of magnetic field B with perpendicular distance r from the axis of a long conducting cylinder carrying current I.

Text Solution

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For a point inside the cylinder, `Bpropr`.
For a point outside the cylinder, `Bprop1//r`.
Thus variation of B with r can be represented by a curve as shown in figure.
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Knowledge Check

  • Variation of magnetic field with distance from current carrying conductor is:

    A
    `B prop a^(2)`
    B
    `B prop (1)/(a^(2))`
    C
    `B prop a`
    D
    `B prop (1)/(a)`

  • Which of the following graphs shows the variation of magnetic induction B with distance r from a long wire carrying current

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  • Which one of the following graphs shows the variation of magnetic induction B which distance r from a long wire carrying a current ?

    A
    B
    C
    D

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