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A straight wire of finite length carryin...

A straight wire of finite length carrying current I subtends an angle of `60^(@)` at point P as shown. The magnetic field at P is

A

`(mu_(0)I)/(2sqrt(3)pix)`

B

`(mu_(0)I)/(2pix)`

C

`(sqrt(3)mu_(0)I)/(2pix)`

D

`(mu_(0)I)/(3sqrt(3)pix)`

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • A straight wire current element is carrying current 100A , as shown in figure. The magnitude of magnetic field at point P which is at pendicular distance (sqrt(3)-1)m from the current element if end A and end B of the element subtend angle 30^(@) and 60^(@) at point P , as shown, is:

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  • A wire loop carrying current I is placed in the x-y plane as shown. Magnetic induction at P is

    A
    `(mu_(0) I)/(2a) ((sqrt(3))/(pi) - (1)/(3))`
    B
    `(mu_(0) I)/(2a) ((1)/(3) - (pi)/(sqrt(3)))`
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