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In figure is shown a circular loop carry...

In figure is shown a circular loop carrying current I. Show the direction of the magnetic field with the help of lines of force.

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The magnetic lines of force of circular loop carrying current `I` are shown below.
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Knowledge Check

  • The figure shows a point PO on the axis of a circular loop carrying current I . The corect direction of magnetic field vector at P due to dI is respectively by

    A
    1
    B
    2
    C
    3
    D
    4

  • A conductor in the form of a circular loop is carrying current I. The direction of the current is as shown. Then which figure represents the correct direction of magnetic field lines on the surfaces of the planes XY and XZ. (Consider those surfaces of the XY and XZ planes which are seen in the figure.)

    A
    B
    C
    D

  • Figure show a conducting loop ADCA carrying current I and placed in a region of uniform magnetic field B_(0) . The part ADC forms a semicircle of radius R. The magnitude of force on the semicircle part of the loop is equal to

    A
    `piRiB_(0)`
    B
    Zero
    C
    `2piRiB_(0)`
    D
    `2iRB_(0)`

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    A current circular conducting loop exerts a magnetic field both inside and outside it. The magnetic field at the cetre of a current loop of radius 'R' and carrying a current I is given as : B = (mu_0 I)/(2 R) The magnetic field lines due to a circular current loop form closed loops. The direction of the magnetic field is given by the right hand thumb rule, which states that if one curls the palm of his right hand around the current loop with the fingers pointing in the direction of the current, the right hand thumb will give the direction of the magnetic field. From this law it is clear that the direction of magnetic field vecB is always perpendicular to the direction of flow of current or perpendicular to the plane of circular current loop. Draw the magnetic field lines due to a circular current loop placed in a horizontal plane.

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    A current carrying circular coil is bent so as to convert it into a double loop, both the loops being concentric and are carrying current in the same direction. If B is the initial magnetic field at the centre, the final magnetic field at the centre will be

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