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Magnetic field decreases we go away from...

Magnetic field decreases we go away from a magnet.

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Magnetic field decreases as we go away from a magnet.
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Magnetic field increases as we go away from a magnet.

The magnetic field at a point, 10cm away from a magnetic dipole, is found to be 2.0 xx 10^(-4) T . Find the magnetic moment of the dipole if the point is (a) in end on position of the dipole and (b) in broadside-on position of the dipole.

Knowledge Check

  • Magnetic field strength due to a bar magnet at a point distant d from the center of magnet

    A
    `1//d`
    B
    `d`
    C
    `d^3`
    D
    `1//d^3`

  • A circular coil of radius R carries a current in it. The magnetic field along its axis decreases as we move away from its centre. The space rate of fall of this field is constant at distance equal to

    A
    2 R
    B
    R
    C
    3 R
    D
    R/2

  • The magnetic moment of a short bar magnet is 2 Am ^(2). The magnetic field at a point 1 m away from it in a direction making an angle 60^(@) with its magnetic moment is

    A
    `sqrt5 xx 10 ^(-7)T`
    B
    `10^(-7)T`
    C
    `sqrt7 xx 10 ^(-7)T`
    D
    `7 xx 10 ^(-7)T`

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