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Find magnetic field at O by the system o...

Find magnetic field at O by the system of current carrying wire.

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From the figure in question, `vecB_0=vecB_(AB)+vecB_(BCD)+vecB_(DE)`
`implies vecB_0=((mu_0I)/(4piR))(-hatj)+[(mu_0I)/(4R)+(mu_0I)/(4piR)](-hati)`
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Knowledge Check

  • The resulting magnetic field at the point O due to the current carrying wire shown in the figure:

    A
    Points out of the page
    B
    points into the page
    C
    is zero
    D
    is the same as due to the segment WX along.

  • The ratio of the magnetic field at the centre of a current carrying circular wire and the magnetic field at the centre of a semi-circular coil made from the same length of wire will be

    A
    `2 : 1`
    B
    `4 : 1`
    C
    `1 : 2`
    D
    `1 : 4`

  • The ratio of the magnetic field at the centre of a current carrying circular wire and the magnetic field at the centre of a square coil made from the same length of wire will be

    A
    `(pi^(2))/(4sqrt(2))`
    B
    `(pi^(2))/(8sqrt(2))`
    C
    `(pi)/(2sqrt(2))`
    D
    `(pi)/(4sqrt(2))`

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