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A circular coil of wire consisting of 10...

A circular coil of wire consisting of 100 turns, each of radius 8.0 cm carries a current of 0.40 A. What is the magnitude of the magnetic field B at the centre of the coil?

Text Solution

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`pi xx 10^(-4) T ~~ 3.1 xx 10^(-4) T`
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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 circular coil of a wire containing 100 turns each of radius 2cm carries a current of 0.20A. The magnetic field at the centre of the coil is…..

    A
    `2 pi times 10^-4`
    B
    `pi times 10^-4`
    C
    `3pi times 10^-4`
    D
    `10^-4`

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    Consider a tightly wound 200 turn coil of radius 20 cm, carrying a current of 1A. What is the magnitude of the magnetic field at the centre of the coil ?

    A long straight wire carries a current of 35 A. What is the magnitude of the field B at a point 20 cm from the wire?

    A long straight wire carries a current of 35 A. What is the magnitude of the field B at a point 35 cm from the wire ?

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