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An infinitely long straight conductor is...

An infinitely long straight conductor is bent into the shape as shown in figure. It carries the current I and radius of the circular loop is a, then the magnetic field at the centre of the loop is ______

Text Solution

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The correct Answer is:
`(mu_(0) I)/(4a)`
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Knowledge Check

  • An infinitely long straight conductor is bent into the shape as shown in the figure. It carries a current of i ampere and the radius of the circular loop is V metre. The magnetic induction at the centre of the circular part is-

    A
    `(mu_(0)I)/(4pi) (pi-1)`
    B
    `(mu_(0)i)/(2a) (1- 1/pi)`
    C
    `(mu_(0)i)/(2a) (pi-1)`
    D
    `(mu_(0)i)/(4a) (1- 1/pi)`

  • An infinitely long straight conductor is bent into the shape as shown below. It carries a current ofi ampere and the radius of the circular loop is r metre. Then the magnetic induction at the centre of the circular part is

    A
    Zero
    B
    infinity
    C
    `mu_(0)/4pi 2i/r (pi +1)Tesla`
    D
    `mu_(0)/4pi 2i/r (pi -1)Tesla`

  • An infinitely long straight conduction is bent into the shape as shown in the figure . It carries a current of I ampere and the radius of the circular loop is r metre. Then the magnetic induction at its centre will be

    A
    `(mu_(0))/(4pi)(2i)/(r)(pi+1)`
    B
    `(mu_(0))/(4pi)(2i)/(r)(pi-1)`
    C
    zero
    D
    Infinite

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