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Figure shows a straight wire of length l...

Figure shows a straight wire of length l carrying a current i. Find the magnitude of magnetic field produced by the current at point P.

A

`(sqrt(2)mu_(0)i)/(3pi1)`

B

`(sqrt(2)mu_(0)i)/(8pi1)`

C

`(mu_(0)i)/(2pi1)`

D

`(sqrt(2)mu_(0)i)/(pil)`

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • A wire of length L carrying a current I is bent into a circle. The magnitude of the magnetic field at the centre of the circle is

    A
    `(pi mu_(0)I)/(L)`
    B
    `(mu_(0)I)/(2L)`
    C
    `(2pi mu_(0)I)/L`
    D
    `(mu_(0)I)/(2 pi L)`

  • A wire of length L carrying a current I is bent into a circle. The magnitude of the magneitc field at the centre of the circle is

    A
    `(pi mu_(0)I)/(L)`
    B
    `(mu_(0)I)/(2L)`
    C
    `(2 pi mu_(0)I)/(L)`
    D
    `(mu_(0)I)/(2 pi L)`

  • Consider the magnetic field produced by a finitely long current carrying wire .

    A
    The lines of field will be concentric circles with centres on the wire .
    B
    There can be points in the same plane where magnetic fields are same.
    C
    There can be large number of paints where the magnetic filed is same
    D
    The magnetic field at a point is inversally propotional to the distance of the point from the wire.

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