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Two concentric circular coils X and Y of...

Two concentric circular coils X and Y of radii 16 cm and 10 cm, respectively, lie in the same vertical plane containing the north to south direction. Coil X has 20 turns and carries a current of 16 A, coil Y has 25 turns and carries a current of 18 A. The sense of the current in X is anticlockwise, and clockwise in Y, for an observer looking at the coils facing west. Give the magnitude and direction of the net magnetic field due to the coils at their centre.

Text Solution

Verified by Experts

`5pi xx 10^(-4) T = 1.6 xx 10^(-3) ` T towards west .
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Knowledge Check

  • A circular coil of a wire consisting 100 turns each of radius 2 cm carries a current of 0.20 A. The magnetic field at the centre of the coil is ______ T.

    A
    `2pixx10^(-4)`
    B
    `pixx10^(-4)`
    C
    `3pixx10^(-4)`
    D
    `10^(-4)`

  • A rectrangular coil 20cmxx20cm has 100 turns and carries a current of 1 A. It is placed in a uniform magnetic field B = 0.5T with the direction of magnetic field parallel to the plane of the coil. Find the magnitude of the torque required to hold this coil in this position.

    A
    Zero
    B
    200 Nm
    C
    2 Nm
    D
    10 Nm

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