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Find the locus of the points where the i...

Find the locus of the points where the intensity of the magnetic field due to a magnetic dipole will be perpendicular to its axis.

Text Solution

Verified by Experts

The correct Answer is:
At `54^(@)42'` with the axis of the dipole
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Find the locus of points where the electric field due to a dipole is (i) perpendicular to its axis , (ii) anti-parallel to the axis . [Hint : "tan" alpha = ("tan"theta)/(2) ]

There is one short electric dipole placed on a horizontal plane. A circle is drawn assuming centre of dipole as centre of circle and plane of the circle is perpendicular to the axis of electric dipole. Thế number of points on this circle where electric field intensity due to electric dipole is perpendicular to the axis of dipole.

Knowledge Check

  • The magnetic induction at any point due to a short magnetic dipole is

    A
    `(pi_(0))/(4pi)(M)/(r^(3))sqrt(3cos^(2)theta+1)`
    B
    `(pi_(0))/(4pi) (2M)/(r^(2))sqrt(3cos^(2)theta+1)`
    C
    `(pi_(0))/(4pi)sqrt(3cos^(2)theta+1)`
    D
    `(pi_(0))/(4pi)(2M)/(r^(3)sqrt(3cos^(2)theta+1))`

  • Consider the situation of the previous problem. The directions of the magnetic field due to the dipole are opposite at

    A
    a tangent galvanometer
    B
    a diflection galvanometer if the earth's horizontal field is known
    C
    an oscillation magnetometer if the earth's horizontal field is known
    D
    both diflection and oscillation magnetometer if the earth's horizontal field is not known.

  • Intensity of magnetic field due to earth at a point inside a hollow steel box is

    A
    Less than outside
    B
    More than outside
    C
    same
    D
    Zero

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    What is the potential energy of a magnetic dipole when it is placed perpendicular to the magnetic field?

    Calculate potential energy of a magnetic dipole in a magnetic field.

    A short bar magnet having magnetic dipole moment M is moving along the axis of a fixed conducting (non magnetic) ring of radius R. The axis of the ring is along z direction. (a) Write the z component of magnetic field due to the magnetic dipole at a point P in the plane of the ring, at the instant the magnet is at a distance z from the centre of the ring. Position of point P can be defined in terms of angle theta as shown. (b) Write the magnetic flux through the ring due to the magnetic field produced by the magnet as a function of z. (c) Write the magnitude of emf induced in the ring at the instant shown if speed of the magnet at the moment is v.

    The ratio of the electric field due to an electric dipole on its axis and on the perpendicular bisector of the dipole is -

    The magnetic potential at any point due to short magnetic dipole is

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