Advertisements
Advertisements
प्रश्न
A circular loop carrying a current is replaced by an equivalent magnetic dipole. A point on the axis of the loop is in
पर्याय
end-on position
broadside-on position
both
none
उत्तर
end-on position
Points lying on the axis of a magnet are called end-on points. In our case, the point on the axis of the loop (on replacing the circular loop with an equivalent magnetic dipole) lies on the axis of the magnetic dipole or on the end-on position.
If P was the point on the axis of the loop, then it is clear from the figure that P lies on the end-on position of the equivalent magnetic dipole.
APPEARS IN
संबंधित प्रश्न
A circular coil of 300 turns and average area 5 * 10-3m2 carries a current of 15A. Calculate the magnitude of magnetic moment associated with the coil.
A charge 'q' is moved from a point A above a dipole of dipole moment 'p' to a point B below the dipole in equatorial plane without acceleration. Find the work done in the process.
Show that the orbital magnetic dipole moment of a revolving electron is `(eVr)/2`
An electron in an atom revolves around the nucleus in an orbit of radius 0.53 Å. If the frequency of revolution of an electron is 9 x109 MHz, calculate the orbital angular momentum
[Given : Charge on an electron = 1.6 x 10–19 C; Gyromagnetic ratio = 8.8 x 1010 C/kg; π = 3.142]
Draw the diagrams showing the dipole moments in paramagnetic substance when external magnetic field is (a) absent (b) strong
The electron in the hydrogen atom is moving with a speed of 2.3x106 m/s in an orbit of radius 0.53 Å. Calculate the period of revolution of the electron. (Π = 3.142)
Do two distinct poles actually exist at two nearby points in a magnetic dipole?
A circular loop carrying a current is replaced by an equivalent magnetic dipole. A point on the loop is in ______.
Let r be the distance of a point on the axis of a bar magnet from its centre. The magnetic field at such a point is proportional to
Let r be the distance of a point on the axis of a magnetic dipole from its centre. The magnetic field at such a point is proportional to
Two short magnets of equal dipole moments M are fastened perpendicularly at their centre in the Figure . The magnitude of the magnetic field at a distance d from the centre on the bisector of the right angle is
A horizontal circular loop carries a current that looks clockwise when viewed from above. It is replaced by an equivalent magnetic dipole consisting of a south pole S and a north pole N.
(a) The line SN should be along a diameter of the loop.
(b) The line SN should be perpendicular to the plane of the loop
(c) The south pole should be slow the loop
(d) The north pole should be below the loop
A magnetic dipole of magnetic moment 0.72 A m2 is placed horizontally with the north pole pointing towards south. Find the position of the neutral point if the horizontal component of the earth's magnetic field is 18 μT.
A monoenergetic (18 keV) electron beam initially in the horizontal direction is subjected to a horizontal magnetic field of 0.04 G normal to the initial direction. Estimate the up or down deflection of the beam over a distance of 30 cm (me = 9.11 × 10–31 kg).
The magnetic moment vectors µs and µl associated with the intrinsic spin angular momentum S and orbital angular momentum l, respectively, of an electron are predicted by quantum theory (and verified experimentally to a high accuracy) to be given by:
µs = –(e/m) S,
µl = –(e/2m) l
Which of these relations is in accordance with the result expected classically? Outline the derivation of the classical result.