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A current 'I' flows along an infinitely ...

A current `'I'` flows along an infinitely long straight conductor. If `'r'` is the perpendicular distance of a point from the lower end of the conductor, then the magnetic induction `B` is given by

A

`B=(mu_(0))/(4pi)(2i)/(r)`

B

`B=(mu_(0))/(4pi)(i)/(r)`

C

`B=(mu_(0))/(4pi)(pii)/(r)`

D

`B=(mu_(0))/(4pi)(2pii)/(r)`

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Knowledge Check

  • A current 'I' flows along an infinitely long straight conductor. If r is the perpendicular distance of a point, very far from the ends of the conductor then the magnetic induction B is given by

    A
    `B=(mu_(0))/(4pi)(2i)/(r)`
    B
    `B=(mu_(0))/(4pi)(i)/(r)`
    C
    `B=(mu_(0))/(4pi)(pii)/(r)`
    D
    `B=(mu_(0))/(4pi)(2pii)/(r)`

  • 1A current flows through an infinitely long straight wire. The magnetic field produced at a point 1 metres away from it is

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    `2xx10^(-3)` Tesla
    B
    `2/10` Tesla
    C
    `2xx10^(-7)` Tesla
    D
    `2pixx10^(-6)` Tesla

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    `1//r^(2)`
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