Advertisements
Advertisements
Question
A circular loop carrying a current is replaced by an equivalent magnetic dipole. A point on the loop is in ______.
Options
end-on position
broadside-on position
both
none
Solution
A circular loop carrying a current is replaced by an equivalent magnetic dipole. A point on the loop is in end-on position.
APPEARS IN
RELATED QUESTIONS
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.
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?
When a current in a circular loop is equivalently replaced by a magnetic dipole,
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
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.
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.
