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A wire placed along north south directio...

A wire placed along north south direction carries a current of 10A from south to north find the magnetic field due to a 1 cm piece of wire at a point 200cm north east from the piece

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Knowledge Check

  • A current flows in a conductor from east to west the direction of the magnetic field at a point above the conductor is

    A
    towards north
    B
    towards south
    C
    towards east
    D
    towards west

  • A long staright wire along the z axis carries a current I in the negative z direction the magnetic vector field vecB at a point having coordinates (x,y) in the z=0 plane is

    A
    `(mu_0i)/(2pi)((yhati-xhatj))/((x^2+y^2))`
    B
    `(mu_0i)/(2pi)((xhati-yhatj))/((x^2+y^2))`
    C
    `(mu_0i)/(2pi)((xhatj-yhatj))/((x^2+y^2))`
    D
    `(mu_0i)/(2pi)((xhati-yhatj))/((x^2+y^2))`

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    A straight wire of length 2 m carries a current of 10 A. If this wire is placed in a uniform magnetic field of 0.15 T making an angle of 45^(@) with the magnetic field, the applied force on the wire will

    A circular coil of 100 turns and of radius 4 cm carries a current of 0.5 A. Find out the magnetic field at the centre of this coil. What will be the percentage fall of this magnetic field at a point on the axis, 3 cm away from the centre?

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    A short bar magnet placed on a horizontal plane has its axis aligned along the magnetic north- south direction . Null points are found on the magnet . The earth's magnetic field at the place is 0.36G . What is the magnet at the total magnetic field on the normal bisector of the same distance as the null points (i.e., 14 cm) from the centre of the magnet (at null points , field due to a magnet is equal and opposite to the horizontal component of earth's magnetic field . )

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